Waves have updated their website with new information regarding Pro Tools 11 compatibilty.
“June 2013
As you may know, Avid has just released Pro Tools 11.
Waves is still working closely with Avid to prepare AAX Native support, and expect to achieve full compatibility very soon.
You will be notified via email as soon as Waves AAX Native support is released.
We thank you for your patience and continued support.”