By coincidence 22B is hexadecimal for 555
not coincidence my friend
the 22b is to commerate the success of the 555 WRC championships.
and since there was a McRae edition and a Burns edition, i'm sure there will be a Makinen edition.
the 22b, P1 (catalunya is a version of the P1, no?), UK300, etc are all special editions not related to a particular driver.
i have a jpg of the P1 catalunya, but its too big to upload