I got my 3ds xl a few weeks ago solely for pokemon, and now I have over a dozen of games, including between worlds. Nintendo has yet to announce anything about a new system, and I doubt they would do so anytime soon. The 3ds family has a few years still.
Just downloaded Resident Evil Revelations for the bargain price of $9.99 from the 3DS eshop. If you don't own the game yet, I'd recommend you check it out at the discounted price because it is for a limited time.