We’re working on a new anti-tracking feature: Bounce Tracking Protection. It works similar to the existing Cookie Purging feature in Firefox, but instead of a tracker list it relies on heuristics to detect bounce trackers.
<span style="color:#323232;">It’s based on the navigational-tracking-protections spec draft in the PrivacyCG[1]
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Bad news is that it is not clear at this point whether Mozilla is going to go forward with the implementation. A post on Reddit by one of the project members suggests that the build is a “rough proof-of-concept”. Some features tested in the build “did not survive”. It is unclear which did not, as they are not mentioned. Mozilla is, however, implementing those that survived the cut into Firefox. Again, the poster does not mention which those are. It is also not verified that the poster is actually a member of the project team, so take this with a grain of salt as well.