Don't know where in this thread it is, but there was a magazine interview with Hot Toys the mentioned Sarah, T-1000, BD T-800 and Endoskeleton as the other possibilities for T2, and they're most likely going to happen, but nothing's for certain until and official announcement comes. Very unlikely, but there was also a passing comment about them pondering the idea of a Harley for the T-800.
Then again, this has been talked about for so long, it might even be in the older T-800 thread that was going before the official pics and specs came out.
I take it with a grain of salt, a similar article mentioned a DX Rambo about a year ago and now twice Rocky's been mentioned in similar interviews and we've not seen any movement on that, so like I said, until the official announcement, who knows just what will be.