This was just sent in and reveals that there is a seminar coming up that ties into the release dates of the new edition of 40k. This mostly just helps us solidify the rumors of the release date until we get a more official release date from GW.
via a Reader on Faeit 212
Just had confirmation GW are holding a seminar at the UK Games Expo Jun 4th
entitled 'The New Warhammer 40k'
This ties in with the previously stated release date as being that weekend.
UKGE gets a huge amount of visitors (upwards of 25000) so is an ideal place
to launch the new edition.