Hello,
In case you've received an offer from UCSD and want to discuss some of its details, feel free to do it in this thread.
I'll start. As a couple of other fellows, I recently received an offer to the master's program, though I applied to the PhD. The same e-mail indicated that my PhD application is still under review. As someone asked what I feel about it, whether it's a good sign, I do not think it is a sign at all =) MS is another program with different entry requirements. And the worst detail of the MS program is that master's students do not receive funding, which nullifies all the sweetness of the offer.
I hope, you have something to add to this thread.