While I
would stay up until midnight (and most likely play TPM2008 way past the time I should've gone to bed

) if someone said it'll be officially available at such time, I'm personally going to sleep at my usual time tonight and won't be expecting anything until I get home from work tomorrow at the earliest.
I haven't been charged yet for the pre-order (which went in April 6th), which is why I've never complained that we never got to play with a beta. But it also doesn't bode well for release times as usually you see at least the reservation of funds about 24 hours before stuff is avaiable. Then again, Stardock has had a history of charging my card a few days as I've bought, downloaded, and played the heck out of something that was available, so that doesn't necessarily mean anything.
Given all the time and energy that was put into finishing and polishing the game (which is why no public beta was available), I'm assuming it'll be available this week. It would be nice if those who pre-ordered through Stardock itself might get a little advanced play in, but I'm not holding my breath. Stardock's a great company, but TPM2008 has been a bit of a slip up compared to their usual standards of communication and their usual above-and-beyond customer involvement.