This version(Beta 5.5) will come out in June. You can expect a few changes. One of them would be the sweet assault rifle, the Galil.
I'm also re-working on the handguns. I realised they are CRAP! Yes, you heard correctly, CRAP! That's why I'm going to spend more time with the handguns. Especially the DE and the elites. I'm going to stress them until I get the bullet spread I want.
So, in the meantime, go ahead and play MP and enjoy yourselves. And at least pay the CL forums a visit and post bugs you find there. MP isn't good right now with all the high latency. But all along CL was meant for SP, not MP.