I'm listening to the Stormlight Archive series by Brandon Sanderson and next in line is Oathbringer - due for release on the 16/11/2017 (in the UK).
I've noticed (via Audible) that there's another book in the series, Edgedancer, which they designate as 2.5 in the series:
- 1 The Way of Kings
- 2 Words of Radiance
- 2.5 Edgedancer
- 3 Oathbringer
It seems that, at the moment, there is no audiobook for Edgedancer and so, the question is, is it required reading before reading Oathbringer?