Anybody knows if Tesla will produce the very fast model X like they did with the S?
Yes, there will be a performance Model-X (e.g. P90). Expected 0-60 in just over 3 seconds.
Model X P90D will do 0-60 in 3.8 seconds according to Tesla's configurator.
259HP front motor, 503HP rear motor. 155MPH top speed.
I should also note that "Ludicrous Speed" is a $10K option that'll bring it down to 3.2 seconds and a quarter mile time of 11.7sec.