The Instagram android app was last updated 4 days ago, Facebook 5 days ago.
They could do similar automated updates to the apps, including publishing them, but they've clearly chosen the path of test thoroughly first, then release.
Re:Pragmatic Releasing
by rosswilson on Saturday November 18, 2017 @07:32AM
(#15728738)
You’re referring to a mobile application that inherently has a slower release cadence - certainly for Apple with their verification process.
A web app can be released multiple times an hour if the business has confidence in its automated tests and release plan.
Would be interesting to hear about the deployment practice of more mission critical products like AWS/GCP.