The short answer is NO.
We expect to begin alpha testing the 64bit version of Dramatica Story Expert some time later in 2021 after the release of Movie Magic Screenwriter 6.7. Since the 64bit version of Dramatica Story Expert requires a full rewrite, we are using much of the technology developed during the development of the 64bit version of Screenwriter.
For those on Catalina or Big Sur, we have an interim workaround using VirtualBox. Here is a FAQ with directions on how to set up the workaround. We've found the performance of Dramatica Story Expert 5.3 on the virtual machine running on Mojave is robust.
The VirtualBox workaround has been tested and runs on both Catalina and Big Sur.