Manuel Stosic has a new post today talking about the upcoming Zend Framework v3 (not "coming soon", but coming) and three places you can follow to keep up on the latest in this version as it develops.
ZF3 is not close around the corner. It's still many, many months ahead. But there are reasons why you should bother and get information about ZF3 as soon as possible. If you understand why changes are introduced - and most of them are explained, some will be explained at a later point i guess - then you can spot errors in todays code already! You can improve your current code by knowing what's going to be "in" a couple of months away.
The three resources he points to are the Google Moderator group for ideas around the framework, issues on the Github repository tagged for ZF3 and a series of planned Google Hangouts where core developers will talk about the work on this new version and answer questions from those watching.