The bots are still being upgraded every few days! However, these improvements result from the analysis of the behavior/game play of the bots against normal players. So don't be put off by the bots and play on the server as usual. Many players often flame and claim the bots are so overpowered, but have a look at your kill death rate against the bots, they are better for almost everyone than against real players! The bots are there to connect the time until there are enough players for realism, but they should also specifically challenge and improve your reaction speeds.

And yes, sometimes it's annoying when you get teamkilled by a bot, but have you ever noticed that you don't get a death count in the scoreboard in this case?