All the Z80 CPUs that have been used on CPC and Plus machines are NMOS. [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/z80-cpu-nmos-or-cmos/ Source]
Zilog ended the production of the Z80 in April 2024. The This chip is still available in ample quantities through NOS chip suppliers. And Zilog continues to produce the [[eZ80]] which is a modernized Z80 CPU.
<br>