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1150 here, just happened to me too. I also ordered a Mach E back in November, knowing it might not show up until June or July. Now I truly believe it will be delivered before my MSLR. This will be my first and last Tesla.
RN1150 as well, white/white/19s. Holding firm 1/8-2/5 since early December. An SA told me about a week ago that the rough build date was Jan 18. I believe none of it!