Thats right - on Tuesday, the Creation Kit is going to be available. This was tweeted just recently by Peter Hines, one of the developers of Skyrim. Source: here. "should be early in the afternoon tomorrow (east coast time)" Source: this post.

Update: Apparently Microsoft and Sony were given the 1.4 patch last week, but have been slow to update 1.4 Patch. (According to Bethesda Developments's Twitter page) (Source: here)

EDIT: Creation Kit is now officially released: See here for more.