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This isn't an event, as far as I can work out; it's just the name for the fallout and aftermath of it, like Dark Reign, The Heroic Age etc.

Well, it's not looking like a push for AF so far:
http://www.fastcocreate.com/3061358/marvel-comics-editor-in-chief-axel-alonso-announces-divided-we-stand-for-the-fall

We've had 'NOW'
This is 'NOW!'

http://www.previewsworld.com/Home/1/1/71/918?articleID=179265

Press Release
Blockbuster new titles. Shocking new status quos. Top-tier creators. This is Marvel NOW!.
It all starts this Fall as...

Yup, I definitely reckon it'll spin off from there.

Hoping for an AF title in this:
http://marvel.com/news/comics/26220/the_future_is_now