Chitter is going to go offline for upgrades in a few hours, for up to 1h30m. More info in the announcement, which can be found by visiting Chitter in a browser and clicking the 📢 at the top of your home timeline.
The window for the security fix's release has begun. When the security fix is released, depending on how critical it is, I (@codl) may not give a heads up before shutting down the instance. So, be ready for that, and hang tight!