In Germany it seems that the Palm Pre will be unlocked according to the PreCentral. "The German version, however, is a bit different. It's available "SIM-Free," which means that Germans don't need to sign up for a contract in order to purchase the Pre. Big ups to O2 in Germany for their transparent pricing and plans:
With the new concept O2 My Handy customers can finance Palm Pre independent of the contract at zero percent interest rate. Customers make a down payment of € 1 in the O2 shop or online at www.o2online.de and pay the remaining sum in 24 monthly rates of € 20 each"Read in full.