Other people ar elikely to have had the email from GW saying this book is now in stock, and having read Atomic Spuds Blog just now I must say that as a Codex Marine Player...WE NEED THIS BOOK!
Okay, mainly for selfish reasons (Stormraven Gunships obviously), plus the fact that the Stormtalon now has the Strafing Run and Hover Special Rules (it has lost the Supersonic rule, and it now cannot escort outflanking units as well as Deep Striking units) meaning that when firing at a unit that isn't a Flyer or a Skimmer my little Flyer is now BS5, woop!