Model 3 RWD & LR no longer will qualify for any tax credit come Jan 1 2024. This video covers how it might impact you.
Take delivery before Dec 31 to still get the tax credit for Model 3 RWD/LR -

You can get a Model Y right now with existing inventory discounts for 32k RWD or 37500 for LR AWD: https://www.tesla.com/inventory/new/my?arrangeby=plh&zip=85253&range=200&referral=robert3199

Pros of the updates:
Point of sale credit
Those with lower tax liability get full credit

Cons:
model 3 rwd/lr no longer qualify

Also tax credit can transfer to the dealer (tesla in this case) to get the full tax credit at the point of sale (income still qualifies).