In the most recent Steam announcement, Valve have mentioned that the first of the upcoming two new Team Fortress 2 maps is in fact "Goldrush." We already know that a CP-style remake of Badlands is the second, which means that CTF Well was just another thrown in... which is a relief, based on how poorly recieved it has been by the public.
Quote:
The first map, Goldrush, introduces a new game mode. The BLU team must escort a high-tech mining cart through a series of checkpoints to the RED base within a time limit. The more BLU players near the cart, the faster the cart moves. The cart stops if any RED team member is in the vicinity. We?re balancing the map now; look for it within the month.
It sounds a lot like a VIP/Assassination style game mode, and sounds like a lot of fun!