The PGLib collection was updated last summer. The new version v23.07 contains additional instances.
I do not know whether OPF instances that were in v21.07 were modified.
So far, we have been using PGLib instances from v21.07, because that's the version that was linked in the PGLib.jl package.
Since v0.2, PGLib.jl now loads instances from the v23.07 collection.
We have a compat requirement for PGLib.jl that has prevented the update to PGLib.jl v0.2 / pglib v23.07.
Changelog from pglib-opf seems to suggest we won't have any issues updating. Spot-checking the diffs on the non-API cases shows just a version number + date change in the comments.
The PGLib collection was updated last summer. The new version v23.07 contains additional instances. I do not know whether OPF instances that were in v21.07 were modified.
So far, we have been using PGLib instances from v21.07, because that's the version that was linked in the PGLib.jl package. Since v0.2, PGLib.jl now loads instances from the v23.07 collection. We have a compat requirement for PGLib.jl that has prevented the update to PGLib.jl v0.2 / pglib v23.07.