Hacker group WZOR tweeted that Windows 8.1 update 2 may get revealed at Microsoft WPC 2014 (July 13-17). They also claimed that Win 9 beta will be probably presented at the same time.
Now, well-known Microsoft insider Mary Jo Foley has revealed that this claim may be wrong as she has heard the update only coming in August and may not be even called Update 2. It may be rolled out as Patch Tuesday updates.
@AngelWZR@NotCassim I also hear August. Part of Patch Tuesday. They may not even call it out as Update 2, I hear, just part of patches