Last major beta branch update this year. All the known stability issues (CTD, performance lag spikes etc) have been fixed, also a number of smaller issues were addressed, too (like CO sometimes freezing in Steam, lag spikes etc). Unfortunately, fixing the stalling attack issue is still in progress, Dave is going to finish that after the holidays. So, while the beta is rather stable now, it would still need to wait until next year to become the official (default) build. Public version 5.2.49, Steam build ID 6009986.