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When did you reserve your Model 3 and what are you currently showing?
From looking through the Model 3 spreadsheet on the forum, it looks like most of the TMC 3/31 California orders have gotten filled with this latest round going to California in December. Did see one 4/1 Calif owner who got his. Right now they are focused on cars going to the East Coast primarily. I'm sure when they start filling West coast orders again they will update the database of order cancellations and any new changes to the orders and then contact the next batches.
Don't wait for email. Login to your Tesla owners page. Many, including myself, discovered that while I never got an email from Tesla, the model3 was ready for me to configure....
Not seeing that OP has participated in the Model 3 spreadsheet so don't know yet when she reserved. Even if she reserved 3/31, Tesla was already sending out initial invites to California in December so picking up a MS in December probably wasn't soon enough to get included in that first group of California invitees. I don't think they update the estimators until they are ready to send out new batches. If 3/31 probably will be in the next batch of Calif owners.
I reserved really late, 5/16/17 but I heard even I reserved that late, they should move me forward, I understand will not be in front of the line but not late 2018.