I called, too, and (Ronnie) told me that all decisions would NOT be posted until 3/31. I also spoke to an MBA consultant and he told me not to worry b/c I didn't get my interview until late in the process and that if I get in, I'll similarly be toward the end of notification period.
They seem to admit 2 x #matriculate = 720, and there are 3 functional rounds -->they will admit 240 (approx) in Rd2. It will probably take them a few days to make that many calls, and they are closed Friday... so I'm holding out hope for a call Mon/Tues. If no call by Wed noon, well, then I'll try to marry rich.

Cheers,
GSR
PS If others want to call UCLA to confirm or try to get additional info, the rest of us would certainly appreciate it: (310) 825-6944