Coming in the near future.
This is something I’ve been working on in my free time outside of work that I plan to make available at some point soon.
Inspiration for this is directly taken from Marko Dabrovic and Crytek’s Frank Meinl
Marko Dabrovic’s version: http://hdri.cgtechniques.com/~sponza/files/
FrankMeinl’s version: CRYENGINE - Crytek"s powerful game development platform
My inspiration for recreating this is to use in a lot of lighting tests and general editor tests that I use for my own rendering uses. It’s still in the early stages as I need to clean up my Lightmaps, some geometry, and add some more detailing along with getting my materials. My main goal with this, unlike the original files, is to focus on a modular approach, especially for testing use cases with Distance Field techniques.
My ultimate goal with this is to have a bunch of test maps for this with a range of lighting tests from Static to Dynamic. If you follow any of my posts here just keep an eye out for updates in the near future. 
I also want to include not only the Sponza Atrium with this but some tests with simple Cornell Boxes. There are a host of tests and tweaks with GI that can be really interesting and fun to setup and get looking right. It’ll be fun to share these tests with you and get any feedback you may have.