Yes, answering your question literally, this is One True link that will alway points to the latest shipping version (the one you'd get if you did download Android Studio).
If you meant the similar but different "are the adb/fastboot available on the web going to track the AOSP master adb/fastboot more closely?", we're working on that. At the moment, there are too many branches and too many independent release schedules, and we're trying to tighten that up so what you see in Studio (and here) isn't as far behind. (While at the same time, not just being a nightly build from AOSP master --- the QA that the Studio team does is definitely worthwhile "overhead" that no one wants to lose.)