She is in Episode VIII, filming is complete, and her scenes will not be changed.
General Leia Organa was played by Carrie Fisher, who was definitely going to be in The Last Jedi (Episode VIII):
“She’s in ‘VIII,’ and we’re not changing eight to deal with her
passing,” Disney Chief Executive Bob Iger said during an on-stage
conversation with his wife, Willow ...
Real-life example, would a Senator who was in Washington claim he was going on a diplomatic mission to his home state? I understand inter-planetary travel is over much further distances... but still Leia was just "visiting home".
Princess Leia is the appointed Senator representing Alderaan in the Imperial Senate. For the duration of her appointment to this ...
Luke's thoughts were dwelling on his friends, Han and Leia. He inadvertently labeled her as his twin sister in his mind just as Vader was scanning him. Note that Vader knows enough about her identity that he's confident that he'll be able to find her and turn her to the dark side. This implies that he knows her identity.
“Give yourself to the dark side,” ...
Leia was adopted as a baby by Senator Organa and Queen Breha Organa, this makes her a princess. You're still a princess regardless of your duties on a day to day basis - you don't actually need to rule anywhere to maintain your status.
A comment on a similar question expands:
A "princess" is a title not limited to daughters of kings and queens.
It just ...
She reacts when first informed.
While subtle, the script has Leia clearly reacting to the news from Luke. However even before confirming that she's his sister, Leia has pieced together the puzzle. She is shown being distraught and frightened.
He's my father.
There's more. It won't be easy for you to hear it, ...
Yes, but it's not very strong; and usually mainly on Luke's side.
Disney Canon - new
"Heir to the Jedi" by Kevin J. Anderson explored Luke's feelings for Leia a bit.
He admits to Nakari that he has "yearning" for Leia, romantically, but that he basically has zero hope of ever getting anywhere (and ends up preferring Nakari as a partner).
I thought ...
Is Leia considered a Jedi?
No. She is Force-sensitive but not trained.
The new canon novel Bloodline gave us a bit more information about Leia and the Force. She chose to remain involved in Republic politics. She is aware of the Force, and occasionally able to use it in extremis. From Bloodline:
"I think some Centrist senators might just be taking ...
Leia knew what she had.
From the script of Episode IV, after our heroes find Leia and escape the Death Star:
LEIA - At least the information in Artoo is still intact.
HAN - What's so important? What's he carrying?
LEIA - The technical readouts of that battle station. I only hope that when the data is analyzed, a weakness can be found. It's not over yet!
Maz Kanata helps her get it
In the Canon animated micro-series "Star Wars Forces of Destiny", Leia is shown defeating Boushh and presumably stealing his armour
Maz: Frozen in carbonite?
Leia: Oh! Chewie said you can help us. We wouldn't ask if Han weren't in a tight spot.
Leia: So what's the plan?
Maz: Patience. ...
Whether she is still technically a princess or not is up for debate but I'd argue that it doesn't really matter if she is or not, there are other reasons to call her a princess.
Out of respect
Lor San Tekka explains this point quite clearly in The Force Awakens, it is still respectful to call her a princess even if the place she was a princess is now gone.
Pablo Hidalgo answered this on Twitter; according to him, she represents the Alderaan sector, rather than the planet:
@BartlamTyler: I've nearly finished reading bloodline a I still don't know what planet or sector Leia represents if any
@pablohidalgo: Same as when she was in the Imperial senate: the Alderaan sector.
It seems like a misconception1 ...
Princess Leia was the only one of the royal bloodline to survive, at least according to the man elected by the surviving Alderaanians to lead them to their new home. Apparently some other members of the "great houses" survived by leaving the planet in emergency craft (or simply not being there when Alderaan blew up).
Eglyn Valmor is up and pacing, ...
In Empire's End: Aftermath, there is this sentence.
The child's name is Ben, and he takes his father's last name, even as Leia keeps only her own family name, Organa.
Even though she is sister to Luke Skywalker, she considers Organa to be her family name, as they raised her and loved her.
In Bloodline (Star Wars) she says this after it is publicly ...
We've known since 1977 that Leia knew she was carrying plans for something; if she didn't know before the film began, she certainly knew by the time she first runs into Vader:
Vader: Several transmissions were beamed to this ship by rebel spies.
I want to know what happened to the plans they sent you.
Leia: I don't know what you're talking ...
The relevant info can be found in ScreenRant's How Star Wars 9 Brought Leia Back & Which Scenes Were Actually Carrie Fisher, a link which is also provided in the short answer on Movies & TV SE.
Mostly reused footage from previous films ...
In order to bring General Leia back, J. J. Abrams used recycled footage, most of which came from only eight ...
Tortured to death
The original novelisation mentions that her death was going to be slow (and presumably painful) but there's not a lot more offered than that in any of the film's canon sources.
Artoo whistled on while Threepio translated. “Level five, detention
block AA-23. According to the information, she is scheduled for slow
If we ...
Alexander Freed's official novelization explains it.
Leia's ship (Tantive IV) was being repaired from earlier (unspecified mission caused) damage
As it was docked in Produndity's hangar; it was carried to Scarif when Admiral Raddus urgently took entire fleet to Scarif
As it wasn't in a condition to fly, Leia had no means to evacuate even assuming she wanted ...
There's at least two examples of Leia actively using the Force in the official novelisations for 'A New Hope' and 'Return of the Jedi', during her interrogation by Vader and once again on Cloud City.
“Where did you send them? Where is the Rebel base?” Without warning, the fire in Leia’s body was blown out, replaced by an icy grip. Fear wound its way ...
Yes. Leia knows he isn't really there
According to a interview with Entertainment Weekly, it is confirmed that when Luke hands Leia Han's dice, she gives him a glance and "that is when she knows" that he isn't really there:
Those watching the film for the first time will likely miss this (they’re supposed to), but Fisher also delivers a subtle, ...
It is certainly implied that Luke, at least, has strong romantic feelings for Leia, and doesn't want Han competing for her affections:
Princess Leia Organa: [to Luke] Your friend [Han] is quite the mercenary. I wonder if he really cares about anything. Or anybody.
[she stalks out]
Luke Skywalker: [calling after her] I care.
Luke Skywalker: So,...
Carrie Fisher Will Be In Episode IX
As of July 2018, Lucasfilm has announced that the late Carrie Fisher will be appearing in Star Wars: Episode IX in their cast list using unused footage from Episode VII: The Force Awakens:
Joining the cast of Episode IX are Naomi Ackie, Richard E. Grant, and Keri Russell, who will be joined by veteran Star Wars actors ...
Just because he didn't say that magic phrase "the Force is strong within her" does not mean he didn't sense it. Also, it's entirely possible he uttered those words in some interaction not in a scene we saw. They didn't claim to follow his every utterance, 24/7.
I'd say evidence points to the fact that he did sense it. She didn't give up what she knew ...
It's a title that her people have bestowed on her by "ancient tradition" and persist on calling her, even after the destruction of their homeworld. Note that a significant number of Alderaanians survived the cataclysm and continue to play a role (albeit reduced) in galactic affairs so it's not like the title is necessarily obsolete, even if the planet is ...
Consider the following:
Obi-Wan knew that Luke’s sister Leia had been left with Bail Organa, since he was there when Bail took her. From the transcript of Revenge of the Sith:
OBI-WAN: We must take them somewhere the Sith will not sense their
YODA: Split up, they should be.
BAIL ORGANA: My wife and I will take the girl. We’...
Off the top of my head:
Norra Wexley (mother of Snap Wexley, seen briefly in The Force Awakens) was born Norra Susser:
"Miss Susser —"
"Now that I'm home, I'm going by my married name again. Wexley."
Aftermath Chapter 2
Shmi Skywalker seems to take the surname of her husband:
With getle hands, Shmi Skywalker Lars lifted the ...
By physically following the data stolen by the spies to Leia.
He literally watches as rebel soldiers run the data tape (stolen by said spies) containing the death star plans to the Tantive IV in Rogue One. At this stage he knows that spies have infiltrated the facility on Scarif and transmitted the data to the rebel ship where the Tantive was docked at the ...
In politics, any reason to discredit your opponents is a good reason. It doesn't matter if the discrediting is justified or reasonable. As long as it helps to turn away support from some of those people who compete with you and rally more people behind yourself it is worth it.
Fact is Leia knew about her father's identity and was silent about it. ...
Probably not in a formal sense
This is a difficult question to answer without formal statements on the matter — and there are none. Still, there is room for reasonable speculation.
Planetary governorship aside, Leia was a princess on Alderaan, a planet that unfortunately no longer exists due to the intervention of the Empire.
While Leia herself ...
Actually, with all due respect for Richard, Jabba did let Leia sleep while she was at his palace. She just didn't happen to be sleeping during that particular scene in the film. During Boba Fett's short-story in Tales of the Bounty Hunters, Leia is sent to Fett's room by Jabba as a "gift," with the instructions "enjoy her." Fett, not being a rapist, allows ...