The PicoZ80 by Engineers@work is un replacement of the Z80 using a Raspberry Pico 2. It features a faster CPU, more memory (ROM/RAM banking), virtual devices, networking (WiFi, BT thanks to an ESP32), rapid application loading from SD card and WiFi management.

It is possible to configure the PicoZ80 with a .JSON file to adapt to the host machine, already working for the Sharp MZ-700 (and later for the MZ-80A, MZ-80B, MZ-800 and other Sharp computers) and the Amstrad PCW 9512 since yesterday (and certainly the other PCW models). I suppose it isn't impossible to target later the Amstrad CPC.