We will just have to wait till the WWDC event to find out. I hope so but my gut says "no". The ipod touch 4g and the iPad 1 may get the boot with iOS 6 or get a stripped down version of it.
No way- it will get it. Look at MacRumors' latest article and also Apple will likely still be selling the current iPod touch when iOS 6 is released.
What do you mean by still be selling the current Ipod touch ? Do they stop selling or changing ? I don't understand ?
Actually the title says all ; Will it work on ipod touch 4G ?
Yes, with limits in place. The hardware in the iPod Touch isn't as great as the stuff in the iPhone 4. The iPods in general have more app crashes for that reason.