Do Jail broken iPhone 3GS get the iOS5 upgrade?

It looks like the Nexus One was shipped without some root security system that ICS needs.

Also, I think the Nexus one is the second generation of the Google made android phone. So it would be equal to the iPhone 3G, not the 3GS.

Is the 3G being updated to iOS5? No it is not.

The third generation Google made android phone is the Nexus S, and it has been promised Ice Cream Sandwich.