How to keep up to date on the changes to the build pipeline

Over that past six months i've been developing a CDN and accompanying clientside code which utilises assetbundles and the caching API. As Unity keeps releasing new versions I'm having a hard time staying up to speed about exactly what changes and/or additions were made.

For example I just found out the caching API offers more fine grained control over what's cached since Unity version 2017.1 (which is something I was really looking forward to) and I didn't see that in the changelog.