They didn't list the non-b series of 48/88/168/328, or 324/644/1284. I'm kind of curious how the 328PB is doing. Some years ago I tried it on a design because of the extra UART port (for GPS) and it didn't work. I think it was like with the GPS connected it wouldn't boot. Maybe I made a mistake or it was software. Kind of wondering if someone has done the same, sticking a GPS on 328PB's UART1. How is arduino IDE's support on it?