The initial plan was that Legions Imperialis would be released in August. However the most recent post on the Warhammer Community site on the new Solar Auxilia Support models there is (hidden away at the bottom) a statement on the release date.
While we had initially hoped to release Legions Imperialis in August, the release date will now be a little later in the year. Don’t worry – you’ll be commanding a tiny legion of troops to victory very soon.
Well that is disappointing, after all the exciting previews we’ve seen over the last few weeks.
The phrase later in the year means that we may not even see this release until December, though I suspect it might be November.