Alfresco's Application Development Framework (ADF) is being made ready to work with Activiti 7. Look for the development activity taking place in the Open Source project as we get ready to release ADF 3.0 which will be the version that supports Activiti 7. The catalog of ADF Components can be found here. And you can find the v3 development branch in the Git Repo here. If you would like to collaborate with the community or make any contributions please join the ADF development team on the Gitter Channel here.