This could be a huge year for Blizzard enthusiasts, with lots of potential massive announcements.
Let's discuss what titles we think we'll see announced this year, and when they will be released.
Legacy of the Void (Starcraft 2)
Released early 2014
With HotS out in March, this is an obvious announcement at this year's Blizzcon. Considering they must have learned a thing or two from the slow development of HotS, I think it is fair to say LotV will be out faster than we think. But then again, they might be greedy douchebags and want to milk HotS for as long as possible.
Unnamed Expansion (Diablo 3)
Released late 2020
Considering how slowly the Diablo 3 development team works, I wouldn't be surprised if the expansion was released in time for my unborn son to play it. However, I think it is fair to say that the expansion will get a teaser at this year's Blizzcon. It would be a great way for them to get the consumers excited about playing again.
Burning Legion Expansion (WoW)
Released early 2014
Every second year we see a WoW expansion pack announced, and I very much doubt this year will be any different - particularly considering how they skipped Blizzcon last year. The only thing that could make this a wrong guess is if they decide to announce it earlier in the year and release it already around Blizzcon (assuming it is in the fall), to shorten the time between expansions.
Released late 2014
This really is the difficult one. Blizzard's next-gen MMO has been in development for five years, and with every Blizzcon in recent years people have predicted its unveiling and been wrong. The fact that Blizzard took two years off from Blizzcon might suggest that they wanted to get to a certain point with the game before unveiling it, and that we'll see it this year. However, they've also said that they want to announce games closer to release nowadays in order to prevent disappointments and unfulfilled promises, so it's not entirely implausible that we won't see anything for another year or two.