I didn't get any solid numbers, but I heard Nissan was moving a lot of LEAFs in March, too. It seems chances are good we'll hit 7,500 in April, the notice will come on May 5, and the credit will last until the end of June. I would call that the most likely scenario.
However, with no numbers available yet, it is possible we already hit 7,500 in March. It's also possible that even if we don't hit it until April, notice could come as soon as we hit 7,500 without waiting until the 5th of May (the law is unclear on this, and it is unclear if the law would be followed to the letter anyway). Either way, the credit might disappear at the end of May. I wouldn't call that likely, but it is only 7 weeks away. And while Tesla says delivery happens in 3-6 weeks, they could change it at any time and some people in the tracker have already waited as long as 8 weeks. So, I ordered my Model 3 a couple of days ago just to be safe. I would have felt better about that decision if the numbers had been posted, but, well, here we are.