Fortunately, we can use the Wayback Machine to remember the past.
At first glance you'll notice the format has changed and the entire thing had been reworded. According to a note at the bottom of the page, this was to accommodate GDPR:
This policy has been expanded on August 14, 2018 to add information required by the EU data protection law.
The second thing to note is the disappearance of this phrase and phrases like it:
We never share your data with anyone. To this day, we have disclosed 0 bytes of user data to third parties, including governments.
It's time to find a new messaging client.
This is late as I don't have a decent way to keeps tabs on the different services I use and whether the warrant canary exists or not. I have a project in the planning phase that would make it possible to subscribe to a certain "warrant canary monitor" that could alert when the canary is no longer observed.