Well, always a good thing when an AG gets a sequel - shows that there are at least some sales, so there's some hope (and proof we're not a dead genre).
Memento Mori is an alright game, I always did feel that there was promise for a much better game, so here's hoping they've learned from the last one and improved.
As for whether you should pick it up - it depends on you, really. If you're scarce on things to play then you could give it a whirl. If not, it depends on how high you've set your bar (as in standards, not alcohol). As far as I can remember it didn't really conjure up much emotions in any directions. It was fun enough while it lasted, but nothing spectacular.
In my opinion.
(Edit): The pics do look nice, even if the characters look a little stiff. I suppose no more Finland though
(Not that it really had so much resemblance to Finland in reality).