As it was last year, Nintendo will be broadcasting its Nintendo All-Access Presentation at E3 2012 free and live through several handy means.
On June 5 at 9AM PST, you can watch it online via e3.nintendo.com (which will be optimized for smartphones) or Facebook, as well as commercial-free on Spike TV and MTV2. You can also follow news and updates on YouTube (which will sneak peek videos of upcoming hwardware and softwares plus game developer interviews), Twitter, and Facebook from Nintendo.
Nintendo also promises to include information about the Nintendo 3DS and Wii U, which is no surprise (if this was given odds, it'll probably be 0.5:1).
Of course, you can just tune into Game Revolution during the conference as well. We would very much appreciate that, lest you be a traitor...A TRAITOR!