If y'all are like the rest of us, it takes about a week to get new cars through their initial diagnostics by the Mother Ship and then begin to fold you into the fleet. You'll see regular updates begin to flow after that. March delivery and believe we've had 5-6 already . . . If you have Mobile Service scheduled to address issues, they will sometimes roll an update to you before or during, such as having HomeLink installed.
Advanced delivery helps, but you're not going to get things super early like the folks in the test and eval groups you see and hear about. The "regular" updates are still buggy enough and we've been fine with them in spite of that as they are great about fixes and rolling new ones shortly thereafter in our experience.
Good luck!
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