Cody, there is a lot of action happening towards a .NET Core migration with DNN but to prevent breaking changes a lot of work is happening. I would recommend you take a look at the Feature to add .NET Core Razor Pages support into the current version of DNN as a Module Platform.
The Razor Pages Feature is the giant story that will hopefully provide a migration path from .NET Framework -> .NET Core.
A big change that happened recently which will be released in DNN 9.4 is support for Dependency Injection which is using the same libraries used in .NET Core. Mitchel Sellers has a great blog about Dependency Injection and references many of my blogs documenting how to use Dependency Injection in DNN 9.4 in any of the module platforms that exist today.