See this video for leaked Nexus Phone ( dont know is real or not :/).
Not much know about Android OS 4.0 Ice Cream Sandwich . But the OS going to be use by both Android Tablet and phone when it is launch. Can't wait to what improvement the OS bring. Hope it bring a lot of improvement over current 2.3 OS (GingerBread). Cross finger on Oct 27 since myself own a HTC sensation phone.