Tomorrow's April 24th over here, so at some point during the day, the Street Fighter IV Championship Mode Update will be released. Based on experience with past updates on Xbox Live, I have a good feeling it will be out after 4:00PM tomorrow afternoon Philippine time. So I wouldn't be expecting the update until then.
As for Playstation Network, being relatively new to the service, I wouldn't know when it will be up and running there. Maybe it will be at the same time as XBL, we'll have to see.
I hope there'll be other surprises too....for instance, replay mode should be allowed even for offline matches (I really hope this happens) and for any matches you're interested in saving to your local HDD from online play. We'll only find this out tomorrow when the update is finally released.