I've noticed a few animated illustrations lately, and I'm fairly confident that this trend will increase as we move further away from print to all digital media. Normally, when I see animated illustrations, the style is more flat and graphic. It was a fun and challenging learning experience trying to find an animation that would work with my style.
I will say this though, I also learned how limiting the GIF format is as far as color gamut. If this is really the future of illustration, either the GIF is going to need to be revamped, or we'll need a new format.