TSE AUDIO has been granted the permission to create AAX by Avid.
Plugins will be ported to AAX as soon as I'm porting my plugins from IPlug to JUCE,
the reason for porting is that IPlug (that I'm currently using) in it's current state aren't very good friends with Pro Tools.
The commercial license of JUCE is expensive, but the income of X50 v2.0 will cover this if I reach the required number of sales. There's a free version of JUCE, but I can't use it without making my software open-source and that's not something I would consider doing at the moment as there is 5 years of work involved in my plugs.