"Single chip, single radio, DYNAMIC ANTENNAE" What exactly does that last mean?

So in the announcement it was mentioned in a slide that the new iphone has a dynamic lte antennae, sounds like it is capable of multiple frequencies for lte, but is is just specific bands or does it have the capability to pick up even more bands within a certain range even if not specifically tailored for that?

I am basically asking if that dynamic antennae is something that supports the kind of range like say ANYthing in the 700MHz -- 2600MHz bands or just something that has multiple select bands it can support within some range, but ONLY those pre selected bands.

CHRIS !! DIETER !! VLAD !! SOMEONE HELP ME UNDERSTAND !!!