Yes. I'm in Canada and using LTE. I was already using it before this update with the hack, but couldn't make or receive phone calls. Now I can, sort of (see edit below).

Downloaded a 25MB file in ~4 seconds yesterday, then made a phone call to discuss it. This update has made the biggest positive impact for me of all updates so far, and I haven't even started exploring the other improvements (but roll on CardDAV).

Thank you Jolla!

Edit: not as good as it seems, unfortunately. To make a phone call is possible: the phone switches from LTE to 2G (slowly, ~20 seconds!) then makes the call, but I still cannot receive phone calls unless the phone is still on 2G...