It's up to you. It looks like they've softened the board up a tad going from 4-3-4 to 4-2-4 for 2010 (maybe because the 2009 boards have 20 inserts and the 2010 have 16). The effective edges haven't changed nor the dimensions...the only big change is the addition of the 159cm size to the Airobic line.
I'm with Jimster on this. Bataleon's line up hasn't changed by much for 2010, so, unless you want a 2010 board, picking up a 2009 could save you a few $$$.