The latest beta releases of ufo2000 are available here. They install into its own directory and do not overwrite installation of the stable version of the game, so stable and beta versions of ufo2000 can be both installed on the same computer. Upgrading beta version is simple, just download a new installer and run it, it will upgrade your existing installation preserving all the configuration and team settings.
Beta versions are configured to connect to lxnt.info:2001 server (it is different from stable versions which use lxnt.info). The game can automatically send bugreports for some kind of problems to the server, so by playing it you greatly help us to test its stability.
You can also report bugs and submit feature requests at ufo2000 bugtracker as the automatic error reporting can't provide all the important details. Also if you are testing the game in hotseat mode and it crashed, we would like to have a look at ufo2000-crash.log file which it generates in ufo2000 directory.
Testing beta releases will help us to release the next stable version sooner. Thanks.