Something like this is not uncommon. Take a look at HTC for example: When Windows 6.5 was released last year, the updates for the Touch Pro 2 rolled out slow and uncoordinated. Tweo weeks after release they supplied upgrades for four countries. We german people had to wait more than four weeks after first english firmware release till they supplied our version of the whole thing. For some countries it took even longer.

Also keep in mind that the N900 was completely launched in Hong Kong with PR 1.2 - maybe even an early adopted international version.