XLN have announced the release of Addictive Drums and Addictive Keys in AAX 64 bit for Pro Tools 11. In their email they say;
We have now released the AAX-64 versions of AD and AK for Pro Tools 11:
There are other small fixes as well, and a standalone version of AD. Please run the Online Installer to get the latest and greatest official versions!
Please run the XLN installer to update your software for AAX