Just reserved my M3!
I received an email at 7:02 EST. Since then I have been wrestling over P3D or not. 3 hours later, decided on 3D. I have been waiting 11 years and 9 months for this day, since The Secret Tesla Motors Master Plam (just between you and me). I invested the little investment money I had in Tesla stocks in college, wrote a term paper on the EV evolution in school, and have been watching every bit of news. It finally happened!
On the P3D vs 3D, the crux for me was the white seats. I really would prefer them, but with the higher risk to damage them, unknown of actual availability, and the risk of tax credit, they became a reasonable trade off. As for the P, 1 second is not worth it for $23k for me, especially factoring in it seems the motors will be just slightly better-tested of the same. A 0-60 of 4.5 is plenty fast and only one metric of performance; $23k can buy plenty of other aftermarket parts to make it realistically faster on a track if that is someone's goal.
Overall, I am ecstatic and wish everyone else the best of luck!