wb_31chg.lha includes full changes from 3.0 to 3.1.
@SamuraiCrow
The most obvious bug is that the AGA fetch rates in the custom chips don't take advantage of fast-page mode rates unless you're in super-high-resolution mode. Kickstart 3.1 kicks it up to full-speed whenever it is possible to do so (and frees up a lot of bandwidth bottlenecks in the process.
Really? I don't see mention of this in the changelog above.