Hello!
Yes, the fix for the opt-in 6.2 kernel for Debian Bullseye based releases is already available on the pvetest
repository since Friday, 2023-07-07 and on the pve-no-subscription
repository since today.
The fix is included in package pve-kernel-6.2.16-4-bpo11-pve
in version 6.2.16-4~bpo11+1