Well at last Games Workshop has put up a 6th Edition teaser:
http://www.games-workshop.com/gws/wnt/blog.jsp?pid=2700048
The 23rd June is probably the pre order date, with the actual release being 2 weeks later.
Update: I've had it confirmed that the 23rd is the preorder date.
I'll be spending my birthday money early this year :)
Excited, bored of all the hype, looking for to a shake up of the game; comment away below.
Rathstar