Hi amyspark,

Yes, the configs you mentioned are v1 configs but they will also work in the v2 library.

There is a v2 demo config that illustrates most of the new features in the OCIO repo at:
OpenColorIO/docs/configurations/ocio-v2_demo.ocio

Also, as was discussed at the OCIO presentation during ASWF Open Source Days, there is an ongoing effort to develop new ACES configs that leverage the new v2 features. 
https://youtu.be/FSzLwSTJjWo?t=856

This effort has already produced a v2 ACES reference config that may be used for testing.
https://github.com/AcademySoftwareFoundation/OpenColorIO-Config-ACES

There are some gists available for work-in-progress, such as this one:
https://gist.github.com/KelSolaar/1e2b054080e074e7f3529439470ee643/f9ba901652884b07a733cc784b362b95328d4880

Doug