Before Manjaro I used openSUSE Tumbleweed. It has this little tool on a service called Boombatower that lets you check the status of important packages in the repositories, allowing you to predict when a major update might reach the distribution.
http://tumbleweed.boombatower.com
Was curious if there’s anything similar for Manjaro. Something like a page that displays the versions of important packages in the various repositories (Unstable, Testing, Stable) and perhaps other info that can help! This is useful for the kernel, KDE Plasma / Framework, Mesa, llvm, etc.