I've said this elsewhere, but when the Euro/Asian spec MS started appearing in photographs with new taillights/charge port in late 2021, it still took 3-4 months for us to see it on NA cars. For the bumper camera/lighting, we've not seen any indication whatsoever that those features will come to existing platforms - only the new 3. So I think it's safe to say we're a ways out.
A bumper camera is probably higher priority given the deletion of USS and the coverage gap that left directly in front of the car, so I could see that coming sooner, but I suspect ambient lighting may wait for a full overhaul/refresh. It's only speculation, however.