iggy popped posted a long message in the MWA forum stating what to expect from the soon to be released Myth III patch. iggy also says that Vengeance is being worked on and could possibly be out this month.

On the Mac demo and retail version:

the plan has been to roll these changes into the mac version, there shouldn't be a separate download for the mac users. also, the mac demo will be out soon and should include 2 solo and 1 multi map. the mac demo will also be made up of the latest game content.

Thanks go to ax for the linkage.