Don't answer just because you love Nintendo, If they are releasing a new console i don't want to spend the money on the wii then have an outdated console immediately. That is something I want to avoid, so should I get the Wii or wait and just buy the 3ds?
It depends.
There are about two, maybe three dozen Wii games that are really good. The rest is mediocre or worse. Those that are good, are really awesome, though. Super Mario Galaxy 1&2, Twilight Princess, Metroid Prime 3 (or get the Metroid Prime collection if you don't have the Gamecube games already), Mario Kart, Super Smash Bros. Brawl, Donkey Kong Country Returns, Resident Evil 4, uper Paper Mario, New Super Mario Bros., just to name a few.
Announced for the 3DS is a similar amount of top-tier games. Ocarina of Time, Metal Gear Solid, Paper Mario, Resident Evil, Kid Icarus, Starfox, Splinter Cell, Super Street Fighter IV, Mario Kart, Bomberman, Contra, Professor Layton, Kingdom Hearts, Final Fantasy, Dragon Quest, Sonic... Yes, most of those are remakes, but they are remaking the best games from each series, and if you haven't played the original, it doesn't matter anyway.
Both Wii and 3DS are backwards-compatible. You can play Gamecube games on the Wii (adding gems like Eternal Darkness, Paper Mario 2, F-Zero GX, Mario Kart: Double Dash, Wind Waker, Viewtiful Joe, Resident Evil 0, 1, 2, 3 and Code: Veronica, Metal Gear Solid: Twin Snakes, Splinter Cell 1-4, Bomberman Generations and Beyond Good and Evil), and you can play regular DS games on the 3DS (among which are Phantom Hourglass, Spirit Tracks, Dragon Quest IX, Final Fantasy 3 and 4, Super Mario 64, Mario Kart DS, Professor Layton 1-3 or New Super Mario Bros). Both will have a Virtual Console, allowing you to buy downloadable classics (NES, SNES, N64, Genesis, Master System, Commodore 64, Neo Geo, PC-Engine and WiiWare games on the Wii, GameBoy, GameBoy Color, GameBoy Advance and DSWare games on the 3DS, with Game Gear, Lynx and WonderSwan titles sure to follow).
As for other built-in features, both have a web browser. The 3DS will be able to play movies in 3D (like Up, Toy Story 3 or Tim Burton's Alice in Wonderland), but a full list of titles (and when they will be available) has yet to be announced. On the other hand, the Wii has stuff like the Check Mii Out channel, the News channel and the Weather Channel.
If I were you, I'd probably wait for the 3DS. But you won't regret either of the two. And they haven't announced a successor to the Wii yet.