I am on Net10 using a AT&T Compatible Sim Card, still on AT&T Network. But since Net10 is a MVNO aka buys wholesale from AT&T perhaps Enterprise and Business Users got it first and then consumers will get it after.
But I got my updates yesterday right when they where rolling out. May take a few days for it show up from AT&T.
Seems to be staggered updates. Some people are getting them some are not. Just keep on checking is all that I can say.
Noticed a big difference in cell reception/battery life with new firmware update that was released..