A massive update is going live today for Super Smash Bros. on the Wii U and 3DS. In this update a slew of new goodies will be made available, some paid and some unpaid. You can expect to see a new Tournament mode, ability to save and post replays to YouTube, and a ton of Mii Fighter costumes. But what we are most excited about is that the Hyrule Castle stage from the original Super Smash Bros. game, and the…