I just got a Paperwhite 2 but I can't find my serial number prefix in the table on the wiki.
The first 6 characters are "G090 G1" which initially made me think that I got the newest generation by mistake. But from what I can tell I should be looking for "90G1" which is not in the table. So is "90G1" a Paperwhite 2?
For some reason Amazon does not tell me the generation on the "Your devices" page after registering it, it simply refers to it as a "Kindle Paperwhite", as can be seen here: