https://techcrunch.com/2017/08/18/google-to-livestream-android-o-launch-event-timed-for-total-solar-eclipse/

Google is using a astronomical event to debut its newest Android operating system update: Android O is set to arrive on August 21, with a livestreamed unveiling event timed for 2:40 PM ET in NYC – which is roughly when the maximum solar eclipse is set to occur for New York.

Android O will get a full reveal at that time, which seems like kind of a weird time to do it since a lot of people will be watching the NASA eclipse livestream that Google is also promoting, or staring at the sky (with the caveat, hopefully, that they have procured proper glasses for safe viewing).