A Goodreads user asked:
WAIT WAIT WAITWAITWAITNOOOOOOOOOOOOOOOOoo So, I read The Rithamtist in 2013. Release date of sequel: 2015 Reaction: *dammit* ... But hey, Fanfiction authors are worse 2015: Check when it is coming out Release Date: 2017 Reaction: *ARGGHHH!!!!* This is a sick joke right? This is a joke, just a joke... *hyperventilating *AHHHHHHHHHHHHHHHHHHhh*
Weiry Well the original release date of 2015 was because Brandon originally planned to write it during May 2014 and Brandon has a policy of having a year between him finishing drafting and the release (because otherwise it drives his assistants insane, which is not something we want). The thing is that because he is going to be dealing with real-life cultures Brandon needed to do a lot of research. When the month was over he felt like he still had to do a lot more research to do the cultures justice but he also had to move on to other projects that he had to write. So he shelved it. As far as we can tell Brandon plans to try starting it again once he finishes Stormlight 3, so early 2016. Which with the aforementioned policy equates to a 2017 release.