Q1 2019, there was no Beacon chain running. They're pretty much live already but only running the skeleton chain to make sure such a sensitive system is given t

Q1 2019, there was no Beacon chain running. They're pretty much live already but only running the skeleton chain to make sure such a sensitive system is given time to test and work out the kinks. Given that the beacon chain has been running since December 2020 and people have locked in billions of $ worth of ETH, highly unlikely the switch will get delayed by long time now.