I'm really happy that they decided to make an official FiM comic. And that it's actually hand-drawn by an actual artist - vectors are fun, but it can get really frustrating seeing them all the time in official storybooks, sticker books and all the like. I know they want to make it quick and cheap, but to me it's just a sign of laziness.
I'm also happy that it will be released under IDW - I've been reading their "Transformers" comics for a while now, and so far they've proved that they are capable of handling Hasbro's properties in a responsible and respectful way, turning them into interesting stories with great characters accompanied by great artwork.
And I'm sure the FiM comic is going to be just like that. Looking at the preview artwork that shouldn't be a problem, anyway.