I think Canon will respond to the F5, not to a 1/3'' 4k ENG-style camera... Not with a firmware update, of course, but a new, expensive body.
4k maybe... a better codec probably... we'll. The thing is, the CX00 does have a really good image. Surpassed in some respects by the BMCC and in others by the F3, but in my experience it's in the same league as the Epic, better than the MX, competitive with the F3 for the most part, and a lot easier to use than the rest when used with an external recorder... I do expect an update in a year or two, yes, because the specs are poor and slow motion and resilient built-in codecs are increasingly popular.