if Chrysler/Fiat can afford to change anything on the Patriot, they would be smart and do what other vehicle manufacturers do and change the tail lights and interior trim style. i don't see them changing the interior trim style since as we all know, it's all plastic...which would require new molds which require time and lots of $$$. i would expect to see a variant of the tail lights currently being used, not different shape, but different color styling. that requires little to no tool modification, in fact, if the only thing they are changing is the colorant then absolutely no tooling changes will be required.
or, they could just give up all hope and re-brand the 2009 models as 2010 models and instead of spend $$$ on actually making changes, just market the heck out of the "Rocky Mountain" edition model as something new when in fact it was introduced on the 2009 models.
at the end of the day, i would expect to see little change on the Patriot from Chrysler for the 2010 production year, if any.
the Italians only have one thing on their minds...and it's getting their product into this country as soon as possible (thus increasing their global market share) to help pay off the billions and billions in debt that they acquired when they "merged" with Chrysler. once this has been achieved, then you might start to see distinct changes to Chrysler's product line (not including re-branding though)