You can use it. I've been using it. I think you have to have logged on with it before the beta went down, since it asks you to connect to bnet for verification or something.
If you run the editor before logging into Battle.net in-game, it will give you a verification prompt. If you log in to Battle.net prior to opening the editor, you won't get that prompt because the game is already validated. If you validated your copy of the game/editor before the beta was closed, you should be able to use the editor indefinitely.
Well once again I miss the boat on an early start with a blizzard editor. Im not going to preorder this game now with this knowledge in hand.
This was what I was planning but I am considering leaving this dream I had of making a map in first 24 hours of release behind unless someone wants to share a CD key so I can download that'd be awesome. Please help my dream come true
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.