The end of the year might be six months away, but there's already a glut of 2010 calendar templates for Office kicking around.
The Inside Office Online blog runs through some of the newly-added templates. Predictably, there's more highlighted for Word than any other product, but there are lots of options if you're already in 2010-planning mode. The master list of 2010 calendar templates includes 75 options, so picking one could take a while.
2010 Calendars: New template styles for Office Suite software [Inside Office Online]