Besides the #Nitrokey FIDO2, I also already have a Nitrokey U2F & a Solo Somu from #SoloKeys, so I wasn't too keen on paying 50€ + shipping for a new Nitrokey 3A Mini – a product I wouldn't need if my old key's firmware had been updated.
Instead, I bought a Token2 PIN+ Dual R3 whose hardware and firmware is also open-source and which costs only 25€ + shipping: https://www.token2.eu/shop/product/pin-dual-release3-fido2-1-key-with-openpgp-and-otp-and-dual-usb-ports #T2F2
The only downside is that #Token2 manufacture their products outside Europe (Nitrokeys are made in ).