The progress rate in mobile tech is so rapid right now that I already feel myself looking at new phones, only 7 months after getting my G2. I'm by no means unhappy with it - I love it, but the dual-core processors and NFC chips etc are definitely interesting to me.
I'm still not willing to give up my qwerty keyboard though.
I'm hoping that Samsung bring out a dual-core, NFC equipped sequel to the Epic 4G, and have an international release this time around, or at the very least a GSM version with the correct bands that I can import from somewhere. A 4" screen, 5-row keyboard, FFC and NFC chip would suit me perfectly right now.