January 15th 2020 is the date for Stable release of Edge insider
So I assume History and Extension syncing are not going to be included because according to this post they are just going to come into Canary at that time and given how time consuming implementing and solidifying Sync features are, it's gonna take at least a couple of months after that. I personally think Microsoft Edge could use some more time being in the beta phase, at least until it gets all of the features that the current classic Edge has, to be a proper replacement for it. https://www.microsoftedgeinsider.com/en-us/whats-new
