For those not quick enough to enroll into the limited QuickDraw beta test, one tester has posted a video overview of the current beta:
QuickDraw real-time online multiplayer drawing game with up to 10 players competing. Each user takes a turn to draw a picture which describes the given word. The drawing is transmitted to the other users’ screens and the one that guesses quickest wins the point. The player with the most points at the end of the round wins.
The game is presently in beta testing and should be released in the near future.