this thread on RPG.net.
I recently bought the Grinhouse Edition and although I've yet to play it I actually find the rules to be better than Swords and Wizardry, which I hold to the highest esteem. It looks like a few people are offended by the "death metal" imagery, which is fine, but they're also making this the basis of their argument that Flame Princess is a bad game - which it isn't.
I personally love the artwork: it's evocative. I'm a metal fan, which includes death metal, so I'm very much used to this sort of artwork, which many people aren't, so I can see why people may be disgusted by it - but to call the game 'FATAL-lite' because of this is purely fallacious.
From what I can tell from reading, Flame Princess is a tight, detailed post-OSR game that I'm really looking forward to playing.