I was very happy to find this out and am excited by the prospect of more projects being developed on GitHub and merged into core :)

I have never used SVN for anything other than updating a plugin on the WordPress.org repo, I have no idea how it actually works. On the other hand I use git for almost all of my projects. Git is much more familiar for me than SVN and I'm certain there are others out there in the same boat.

Using git instead removes a barrier of entry to core contribution that previously blocked me from actively being involved during development.