FYI, my award notification went straight to my spam folder. Might want to check that out :). The awardees must accept or decline by tomorrow, so those on the waitlist will hopefully hear back soon.
For those notified today, the acceptance letter must be returned by April 12 (next Wednesday). So, if you don't hear back in the first round, that may be the general timeline you should be looking at.
We should remember that the results section is run on an honor code, so we don't know the actual status of any notifications. It is best to wait for secondary validation before jumping to any conclusions that notifications have been sent out.
On that note, I also have not heard back from Krell