I think it is awesome that DC has decided to correct their original mistake of soliciting the Final Crisis Hardcover as just Final Crisis #1-7 and instead making it Final Crisis #1-7, Superman Beyond #1-2 and Final Crisis: Submit #1.
It's still pretty odd that it took them over two weeks to make it official.
But that's beside the point - congrats, DC, on making a great call and reversing course! That's a rare thing among big companies, and I really appreciate it, and I think the readers will, too, as they'll be provided a better product. Kudos, again!