2008 wasn't a good year for Nokia and neither will 2009 be:
"And then, closer to July 2009 the novelty will appear with $790-820 price tag and become an interesting alternative to Side-Slide communicators based on Windows Mobile. Now it is too early to speak if the device will be popular or not. Anyway the handset is another basis, which gives some features to be developed in next models. If you are interested in quantitative characteristics, this device is hardly to meet you demands, but the next stage of technical progress in Nokia is expected in 2010."
Sounds like a good year to switch. They'll need something "iPhone" revolutionary to get me back in 2010.