SPOTREP #00007 and therefore the first Arma 3 Beta patch, was released last Thursday. It had a long list of additions, fixes and changes. However, we were mostly keen to get this patch released so that we can now focus on bringing content additions. Development branch has finally received the first deployment of BattlEye anti-cheat integration. Its creator Bastian Suter is working with us closely to gather server administrator feedback and to keep improving it. One of the goals for the Arma 3 version is a more seamless integration. You do not have to install anything separate. When first connecting to any BattlEye-enabled server, you can accept its End-User License Agreement once and you're good to go. Hopefully this is a big step towards a more stable multiplayer environment.
The second cool thing that was just today uploaded to Development branch: the APC