At the far end of the update frequency spectrum from LTS is Google's "live at head" philosophy. Google's Abseil C++ library, for example, recommends that consumers update to Abseil's latest commit from the master branch as often as possible. Abseil have no tagged releases besides master and an LTS branch (updated every 6-9 months).

https://abseil.io/about/philosophy#we-recommend-that-you-cho...