Grabbed this link from Gruber's blog: http://tidbits.com/article/13147

Some small changes/items in 10.8 which are not necessarily obvious. Glad to see "Save As" brought back, even though it requires an additional keystroke modifier. IMO, the whole versioning and auto-save thing is ill-conceived, poorly designed and poorly implemented.

Also glad to see auto-locking of files is gone.