This is ticket for collecting things related to 3.0.0-beta2 release.
There was one serious issue in beta1, prompting beta2 release relatively soon: alien ruleset does not get correctly installed #41828 (Resolved)
There's currently a regression in S3_0 compared to beta1, breaking installer_cross builds: #41843 (Resolved)
Significant rule change for the default ruleset (civ2civ3): #41929
Likely regression since beta1: #41940
Cygwin build failure, regression since beta1: #41995