US Mobile now has a 3-network deal offering

An email came to me from US Mobile today entitled:
"Multi-Network Access is officially launching May 1st"

I used their chat & they confirmed that it is AT&T, VZ & TMob all together.
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It will be of little use to me 'cuz there's zero VZ or TMob here at home, but if her phone is compatible having both AT&T & VZ on a single phone may serve her well in her travels.

Anyone else here see this yet ??

This presents it as I always saw it described as it was progressing through beta/testing, pick any 2 (of the 3) & only on their more expensive plans.

Our cellular needs are for T&T, but not data - since our primary qualifier is low cost for that, US Mobile serves us very well.

Yeah, I meant to clarify that it is not "AT&T, VZ & TMob all together." It is pick two of the three.
Also that it is not applicable to your grandfathered plan.