This is good news! Seems that Apple have finally released an official fix to the WiFi issues introduced with Mavericks. Might seem trivial but one of the nice things about the Mac is that you should be able to just open, and start. Not open and wait 5 minutes for the WiFi to not do anything, even when it knows all the network info.
I blogged about this before where it seemed to be related to Bluetooth config, which is plain daft, anyway. I’m off to install the update and see what happens.
Read the official release here.