Personally for me, if I didn't have a 3DS, I would buy one just for X and Y. If you've been following X and Y's development progress, you most likely have the hype to buy it without hesitation.
It really depends if you just outright want the game, or if you have the money to buy a 3DS which is still worth it without X and Y. (Luigi's Mansion, Animal Crossing, etc.) And, the 3DS will still be a modern console for a long time. So you'll be playing it for awhile if you do plan on getting one.
If you're not too sure still, then I guess wait until the game launches and see what everyone thinks of it. It's definitely a perfect time to get back into Pokemon, seeing as this game is really revolutionary based on what I've seen at this point.
It really depends if you just outright want the game, or if you have the money to buy a 3DS which is still worth it without X and Y. (Luigi's Mansion, Animal Crossing, etc.) And, the 3DS will still be a modern console for a long time. So you'll be playing it for awhile if you do plan on getting one.
If you're not too sure still, then I guess wait until the game launches and see what everyone thinks of it. It's definitely a perfect time to get back into Pokemon, seeing as this game is really revolutionary based on what I've seen at this point.