Over the weekend we've identified a few minor issues with ledger snapshots, and since they're impacting block times, we're issuing a minor release to clear them up. Our old code assumed that all Hotspots would have all of the blocks, and there are a few bits of code that rely on that, one of which affects consensus nodes, which has been negatively affecting block times.
2020.05.31.0 release was deployed to the beta group in the evening of Sunday the 31st around
8:50PM PDT. After this beta period was released to GA around 10:45 AM PDT on June 1st.