I would not be surprised if we see it later this year since it would result in a huge demand spike and Tesla has to keep the new orders at a high level.
Now that the P100D is out there some people know the 100D will come and will wait.
Of course there is the possibility that they don't have the manufacturing capacity, but they are probably already working that
P100DL is out - however, how hard is it to turn off L availability for $10k less? Once packs can be made faster, allow non-L orders. Then once more packs can be built - allow non-P ordering. I assume MX P100D first because larger car needs more energy per mile. Then MS P100D to follow and so on. They definitely should be offering this later this year. You saw how fast the down-market move for MX happened and so good chance this happens quicker than some assume.