I thought about it, especially since I'm going on a long trip around a week after it releases, but I don't think I will. Too many things I disliked about the previous generation that have not been addressed from what I've heard. I'm starting to find the game series depressingly stagnant, every generation there's new mons, a graphical upgrade, new gimmicks that won't make it into the next generation, some minor polish and that's about all you get in the way of evolution.
It would've meant much to me personally if SM had at least
1) had some semblance of an actual endgame so I could face off against high-level rosters without having to go online. As a kid this was my biggest issue with Silver (which I played to death) and five generations later, they still haven't addressed it.
2) kept the goddamn DexNav from ORAS. That thing was amazing.
I base some of my skepticism toward SM on
gbatemp's negative review of it, which is really the only prerelease review I would trust at all. Also I've heard the framerate on the old 3DS is terrible, which is what I have. This is exactly what I feared when the n3DS was announced - that the old 3DS would
technically be supported but o3DS users would get shafted with terrible framerates on certain titles.