I'm also hedging my bets that Iris is the 8th Gym Leader [seeing as White, annoyingly, has the superior game features].
First time I've seen the Munna evo though [I haven't yet been able to play my copy of Black - but I will be able to with my Aqua Blue 3DS on Friday].
That's a hideous design. Lazy too, as it's just Munna in a purple jumpsuit.
Meh. Maybe it'll look better in-game... *he doubts it though*