I would think not. The hardware on the new phone is light years ahead of the Centro. The new OS probably takes way more resources than what is available on the Centro. The screen types are different so I don't think the gesture navigation in the new OS will work either.

Having said that, the current Palm OS is extremely capable and I don't believe the new OS would get you anymore functionality even if it could be ported (still no GPS, WIFI, etc).

Remember this, if the new OS is so great, why are so many people on Palm forums concerned about backward compatibility. Its because the current OS has so many useful apps already written for it that people don't want to give them up just for a little more pizazz.