The Informa Handsets Forum USA was held in October in San Diego. I gave a talk on mobile handset user experience trends. Of course the iPhone is going to affect 2009 in a really big way, and touch, animation, sexy graphics, application stores, music well done, and mapping are all part of the trend set, but there are some others too. Check out the presentation to see the rest.
Link to talk: handset-mobile-ux-trends