Interesting seeing them taking over more of the CPU's workload too, with the rate GPU performance is increasing and the rate CPU performance... isn't, it's probably not surprising, but it should mean the CPU is less important in terms of gaming performance in future. Maybe one day we'll be buying GPUs with integrated CPUs in much the same way as we currently have Intel CPUs with Integrated Graphics. Maybe a seperate CPU won't even be needed at all.
The AI voice/broadcast stuff isn't anything new but still works really well and probably has applications outside of just gamestreaming.
I'm probably going to go for a 3070, not sure I can justify the cost of a 3080 for playing Assetto Corsa but I do want to get Flight Simulator so it could be worth getting a 3080. Most excited for HDMI 2.1 though, finally I can run 4k120hz.