I still haven't gotten my final issue yet, but a picture of the regular version of the final issue's cover has been sighted.
http://img831.imageshack.us/img831/8830/originalop.jpg
They end it all by bookending. I'm guessing the subscriber edition's cover will have the exact same art. That would be great. Plus it wouldn't have any text over it either, except for the NP logo. I'm totally looking forward to getting mine in the mail. I might even buy the one with the regular cover from a store since it's so close to the first issue's cover with all the text over the picture. Maybe it'll even be wrapped in plastic.
It says "25 Years of NP History", but the magazine has only been around since 1988, and that would make it 24 years. Perhaps they're also including the Nintendo Fun Club News newsletters in the history, which started in 1987. Ah, good times.