Hello,
No, currently not. This request is still in our TODO list. For the nearest release, we are going to concentrate on the new look and feel of Adaxes Web Interface and a completely new Web Interface engine. Also, we are going to completely rework the Reports subsystem to allow custom and scheduled reports and many other long-awaited features. There's really a lot of work to do, so, most probably, we won't be able to squeeze dynamic distribution groups in the upcoming release.