Most postings regarding the next model seem to settle for a dualcore chip, smaller bevel, flatter case, improved speakers along with front and back cameras for facetime chat. More a refining of the current model than a radical upgrade.
Frankly the current model will continue to work well and only the missing cameras should give you any pause.
The apps and OS define what you can do with the device and the internet connection will define the speed with which they work. Neither of which are going to significantly change over the coming year.
Just enjoy it. Who knows what the future will bring.
Oh and on that note, Happy New Year.
I'm just looking forward to iPad 3, hopefully it will be re-designed completely which should make things interesting.