This is just a rumor of course... Someone in my state of WI in our forums has been in contact with a Samsung engineer that does testing. Supposedly their test vehicle(s) will be getting LTE 800 equipment soon. WI isn't a fully developed market, either. So very likely LTE 800 will be available sooner than some may think!
So having to wait 2 years to take advantage of it, signing a contract for the Note 3, would be a mistake