Ah- I was not aware they had an LTS with different versioning. (And I did attend DjangoCon many years ago)- I clicked on this article initially because I was curious with what USSD was in the first place-
LTS doesn't use different versioning. It's standard semver, and every third release is LTS.
The sequence of releases is 1.8, 1.9, 1.10, 1.11. After that they went to 2.0 (first version to drop Python 2 support). IIRC, the next LTS will be 2.2.
Thanks for clearing that up for me :)