Nothing mindblowing
I hope I'm wrong, but I don't see 2014 being a standout year for Apple. They'll update what they current have but not blow any of us away with the upgrades.
Expected yearly updates:
Iphone 6 - New Design, better specs
Mac Line - updated specs, no new designs (although I'd love to see a new Mac Mini design)
iOS - Air 2/Retina 3 will both see spec bumps but nothing spectacular.
Non-Annual:
AppleTV 4- OS upgrade to compete with Amazon FireTV (Please bring the App Store)
Thunderbolt 2.0 - Might introduce 4k Display, usb 3.0, but it won't be "retina" (331 ppi) for a couple of years. Most 4k 27" displays are only hitting 200ish ppi.
iWatch - read below.
Over the last decade we've all been spoiled by Apple. Apple does a good job at releasing products when the market is ready. In the last decade Apple has revolutionized three major markets - MP3 Players, Cell Phones, and Tablets because they were all ready to see a dramatic change. The iWatch has been rumored for a couple years now, but so far I think all the renders have it wrong. Every rendering looks unfinished, unpolished, or like an ipod Nano watch. Apple designers aren't dumb, if people can't wear the iWatch w/o drawing lots of attention then it won't be a widespread success - at their core watches are supposed to be functional without drawing lots of attention. Expect something similar with the iWatch (at least this is my hope). Ive once said something along the lines of "Apple computers have lost their sex appeal" - expect the iWatch to bring functional sexiness to watches.