When is mid-split upgrade planned for zip code 33478 in FL? Considering switching to AT&T fiber for higher upload speed

I'm on no-contract terms with Xfinity so can switch at any time. I have been waiting ever since the network upgrade was announced, but nothing yet even after several months. The original announcement included West Palm Beach which we are near, so figured it was only a matter of time, but alas my patience is starting to wear thin unfortunately. In the meantime, AT&T built out their fiber network in my area with symmetrical speeds, so considering making the move over if the Xfinity upgrade is still a long ways out. Have neighbors who already made the switch and they have had 0 issues with their AT&T service.