Well it is fun to play with, (10.3) and I do believe that it is the GM, I haven't found any odd quirks with the software that I'm running.
The only thing that I have found as odd, is when an application crashes, it still offers to send a crash report off to apple. Either this is a new feature to help apple sort out what is causing crashes, or apple still has sound debugging code in this build to clean up before release. (They had better hurry up, I just got my confirmation e-mail saying that my order is being processed.)
As far as the "IOPlatformMonitor" I'm not sure, wish I could be of more help to you on that.
The only thing that I have found as odd, is when an application crashes, it still offers to send a crash report off to apple. Either this is a new feature to help apple sort out what is causing crashes, or apple still has sound debugging code in this build to clean up before release. (They had better hurry up, I just got my confirmation e-mail saying that my order is being processed.)
As far as the "IOPlatformMonitor" I'm not sure, wish I could be of more help to you on that.