But can PSP2 go 3D-less for... 5 years?

Assuming it release early 2012, can it really go without 3D until 2017?

Yup, but it may take up to 4 years after PSP2 launch.

Till it doesn't launch, Glasses-less 3D sucks. When it does launch, Sony has been working on it since the last supper.

Well Sony did talk crap about having it on a small screen but they will in the end just like with the Wii mote hehe

tbh I'm really not sure.  Sony is in a tough position, if they don't go 3D, any technical advantages it has over the 3DS won't be seen that way as it doesn't have glasses-less 3d.  However, if they do go 3D, it will severely increase the cost, unless they reduce the specs of the platform, neither of which Sony preferable want to do.

i ithink it will have a 3d screen it fits into thier portolio of 3d tech

On the price front. I guess they figure if 3DS is gonna be expensive at launch, then PSP can be expensiv-er. Just like PSP vs. DS. Since when has Sony been the lower priced product?

Knowing Sony, I predict PSP2 is coming with 3D glasses (sold separately)

In your face, Ninty!

Sony could do it, not unlikely. But are we sure 3D will always be beneficial? I can't help thinking that 2D games "popping up" on 3D screens will look terribly cheesy. And as 2D games are already very important on the existing Nintendo platforms, while 3D is more important for Sony, it could be PSP2 to benefit more from it. OTOH, 3D screen could make a bump look uncannily real, allowing Sakamoto to add insane amounts of maternal instict to the next Metroid titles. Mushrooms and turtles would poke in gamers' eyes even in the flattest 2D Marios titles. Malstrom would be burned to ashes in a puff of smoke, hissing "Sssssakamoto, you asshole"! Malstromites would commit mass suicide drinking cyanide laced orange juice. Malstrom Royal Guard would strafe those refusing to drink. The 3DS experience would be awesome!

THIS!!!

Yes, it is almost impossible for it not to go 3D with the 3DS doing it.