A couple of other webpages also reported about ucard and everyone talked about what you could do with 2TB (like collect 1000 DivX movies on one card).
What I am not sure about is whether the card would be immediately available in a 2TB version, or whether it is just
supported by the card's specs! If you look at the Digitimes article Morpheus provided, you see that the Sony Memory Stick Pro and Duo carts can also physically address up to 2TB. Yet, the biggest Memory Stick Pro available right now is 1GB. Sorry to spoil the fun