Following on from the tweak to Danger Zone to focus more on duos, Valve are still tweaking their Battle Royale mode in Counter-Strike: Global Offensive as well as the game as a whole.
Firstly, for Danger Zone you should now see much better queue times for matchmaking. Before this patch, I could easily see queue times around 3 to 5 minutes (often the latter) even with a lot of people online which is not ideal and frankly that makes me (and no doubt others) get bored and look to play something else. Since this patch has dropped, I've played a good 30-40 matches and not a single one has hit even 2 minutes queue time (under 1 minute mostly now!) which is a pretty huge improvement.
It really might not seem like much, but even if we just take the median of what I was waiting most of the time before around 4 minutes that really does add up fast so having that essentially cut in half (and often better) is awesome.
Additionally, the "Recent teammates" tab in the menu will add in your current teammate (not just after games) so if you find them friendly you can add them as a friend or invite them to play with you right away which is pretty handy.
Outside of Danger Zone, Valve also removed the Cobblestone map from competitive matchmaking and put Vertigo in with a few tweaks. One weapon also saw a tweak this time around, with the Zeus-x27 no longer able to kill people through a wall.
So overall, it's not a huge update but it seems like quite a welcome one, especially if you play Danger Zone regularly.