Avchd files *.MTS are not recognized by QuickTime Player in OS X 10.8.3

I have some acvhd files named as 00036.MTS and they play pretty good with VLC. I got all excited when I read that in OS X 10.8.3 that the QuickTime Player will have support for avchd files. I just upgraded three machines to OS X10.8.3 a Macbook Air, Mac Mini and an iMac, when I click on an a 00036.MTS file it defaults to VLC and if I right click and select to use an application to use QuickTime does not display. If I select all applictaions then select QuickTime, I am told QuickTime may not recognize this format. I click ok and get, "The document "00036.MTS" could not be opened, QuickTime Player cannot open files of this type. The avchd files have been created with a Sony camera.

What do I need to do to get this to work?

Walter