The full details are now out
Marvel NOW is being promised as an easy entry point into the classic Marvel U. Throughout October, Marvel will launch a number of brand new series -- often more than one a week -- with additional new series and relaunches for some classic books rolling out through February of next year.
by Rick Remender and John Cassaday (so, of course, the book will never be on time) - starts in October, starring Captain America, Wolverine, Thor, and Havoc. First enemy will be the Red Skull, consciousness circa 1943-44.
by Jonathan Hickman and Jerome Opena - starts in December, featuring 18!
characters. First story arc is called "Avengers World." Title will be published twice per month; Hickman plans to mix arcs of five to six issues with single issues highlighting individual characters.
by Brian Bendis and Stuart Immonen - starts in November, starring the original five X-Men thrust forward in time to the present day Marvel Universe. Bendis says the title will primarily be a character story.
The Marvel NOW! initiative will also feature costume changes, "new character attitudes," and some changed identities. CBR also notes
that the Marvel NOW! titles will feature "new 'cinematic' cover designs," plus several digital features. See the links for quotes from the writers and Quesada.
So the focus still seems to be on the three titles that had already been rumored / leaked out, with no details yet on the titles that will follow.