Hi,
Mesa main has started dropping support for classic drivers[1] .
This will affect users of Amd cards using r100 & r200 chipsets, (old)
Nvidia cards using nouveau-vieux and Intel i915c & i965c .
The plan is to support those older drivers through a new mesa LTS
version that can be installed alongside normal mesa.
Archlinux team will have to decide whether to add a mesa-lts package to
keep supporting that hardware or just drop official support for them and
hope some users will support them through aur.
Atm it looks like mesa 22.0 will be the first stable version without
support for this hardware, so there is still time to prepare for this.
Lone_Wolf
[1] https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10153