[SafeSituation]

So, the takeaway for US AT&T customers is that they may potentially roll out LTE on a band that the Nexus 4 supports, but it hasn't yet?

[untog]

I'd be surprised if they did- why use more bands when you're doing OK with the ones you use now?

The possible win is when T-Mobile eventually rolls out LTE. They are likely to use Band 4... but AFAIK haven't announced when they're ever going to roll it out.

[wmf]

T-Mobile is turning on LTE in 2013. It looks like the Nexus 4 was designed to be ready for it.