This release is a stability release, it makes some critical improvements that should help with network and node reliability.
Note:
On first run stellar-core may appear to be stuck for a while (order of a minute) while it garbage collects the bucket files - subsequent starts will not be slow. Last line before that pause will be “Loading last known ledger”.
You may want to disable garbage collection of historical meta data if you need to reingest it in Horizon for example.