Microsoft’s recent spate of builds of Visual Studio 2019 is driving the recent succession of builds of Visual Assist. Build 2324 is no exception. It’s only feature of note is support for Visual Studio 2019 RC.
If, for some reason, you are still using Visual Studio 2019 Preview 1-3, Visual Assist build 2324 will install to your IDE, but know that Visual Assist is no longer supported in the environment.
Build 2324 requires software maintenance through 2019.03.08.