Yes and no. It's not just a matter of fitting 9 channels of decent quality amplification into a single chassis, but all the processing power to handle these formats plus sophisticated room correction, video processing, goodies like WiFi, and so on. Getting the total package isn't going to be an inexpensive proposition in the near term.
Then there's the simple math associated with buying 9 versus 5 or 7 speakers plus subwoofage. If you've got a massive budget, no big deal, but if you're like the rest of us, it a question of tradeoffs. Is it better to have a good 5.1 or a mediocre 5.1.4 system? Personally, I'd just assume get the basics like dialog clarity, solid LFE, etc. down before I worry about adding height channels. Even with my main setup, I'd rather add a second sub before I think about dropping the coin for a new pre/pro, more amplification, and 4 more speakers to jump to a 5.1.4 rig.