Newsarama's got confirmation from Mega Con on the story you originally heard at the Collected Editions blog, that the Final Crisis hardcover will indeed now contain the seven-issue miniseries, plus Superman Beyond #1-2 and Final Crisis: Submit. The Final Crisis Companion, originally supposed to include Superman Beyond and Submit, will have the Final Crisis #1 Director's Cut and Final Crisis Secret Files, along with Final Crisis: Requiem and Final Crisis: Resist.
Read these related Collected Editions stories:
* Final Crisis collection details change, and Batman RIP hardcover news
* Trade Perspectives: Batman: RIP and Final Crisis Further Thoughts
* Trade Poll: Which to read first, Batman: RIP or Final Crisis?
* Final Crisis hardcover solicitation
* How do you want Final Crisis collected?
In other Mega Con news, Dan DiDio and Vince Letterio (Direct Sales) downplayed the possibility of a Young Justice trade paperback right now, though the recent upswing in requests for this makes Collected Editions think it's not too far away ...
So the real question is, with the change in the Final Crisis hardcover's contents, will current orders be cancelled, and will be book be resolicited with a new price?