The processor type will likely be the unnamed (we're thinking Qualcomm, of course) 1.9 GHz quad-core for the North American market, and the Exynos octa-core for the world version.
Looks like the Octa will support all LTE bands.
Samsung confirms LTE support on the Exynos 5 Octa processor - GSMArena.com news
It does, but it seems that Samsung turned off the LTE bands that are not supposed to be in use. I mean a software update could and they SHOULD turn them on, what's the point in having a fully capable LTE chipset if you are not going to use it.