Good IGN article about ways to do 3d without glasses:
http://gear.ign.com/articles/107/1079403p1.html
They're leaning towards Parallax it seems. Which, I would agree with since it makes the most sense, as you don't have to worry about viewing angle.
Considering there has been a flash cart or flash cart like device for every handheld ever made (heck, even the virtual boy has a flashcart, not that it's really "portable"), I don't think the 3DS will be any different. Within a year after release I'm sure there will be a fully working one that allows you to play everything. Maybe we'll even get a fully working SNES emulator
http://gear.ign.com/articles/107/1079403p1.html
They're leaning towards Parallax it seems. Which, I would agree with since it makes the most sense, as you don't have to worry about viewing angle.
Considering there has been a flash cart or flash cart like device for every handheld ever made (heck, even the virtual boy has a flashcart, not that it's really "portable"), I don't think the 3DS will be any different. Within a year after release I'm sure there will be a fully working one that allows you to play everything. Maybe we'll even get a fully working SNES emulator