You'll like the DD-series too (but who doesn't like DDs? *corny laugh track*) they go 14/20/28/32 pins, 16/32/64k flash with 2/4/8k ram and 256b eeprom, ADC on every pin 3 (or 4 on 28/32-pin) pins with MVIO (no ADC on those pins if MVIO is in use, obviously), Dx-style clock generation, we get TCD, and 28/32k parts have a third TCB. Oh, and the 20-pin ones come in soic-20 or VQFN, but not the 3x3mm one that the tinyAVR 20-pin ones come in, which can be massaged into a 20-pin DIP outline - those are coming to my shop for the 1616 in october btw - but the 28 pin ones will be in DIP package too, so who cares?). Oh, and dedicated reset pin, but both reset and UPDI can be fused to GPIO, though one of them is input only like usual on Dx? Can't be certain about that. Product brief is out, but that's it, so who knows when we will see it, probably 2021.
I have just installed the 2.1.3. I now get this error when compiling.