 On April 7, 2013, Avid announced Pro Tools 11.From this version forward, Avid has made the AAX plug-in the only format supported by Pro Tools.At launch, many third-party plug-in developers have yet to port their software to the new AAX format, so Avid will sell Pro Tools 11 with both an 11 and 10 license, allowing users to run Pro Tools 10.3.8, which is the last version that will support RTAS.