Do it! I just did after 5+ years of Model 3 life.
So many changes in even the 3 since my first one in 2018 and my current 2019, but was blown away by the current X offered at this price and incentives.
You'll never have the latest Tesla for even 6-months no matter how long you wait.
HUGE improvements from the last generation, been sharing this link around that's very detailed and updated often...last time was just last week.
teslatap.com
Most recent for the X was HW4, Matrix Headlights and the larger rear screen with edge to edge design.
If I get anything "extra" by the time my order comes in great, if not I'll be more than happy with this significant upgrade from an "old" 2019 3.