That source just reflects what EK put to the sales software. It is updated whenever EK updates it's schedule. For example it was showing a start of the network early May last week.
Countries still have closed boarders. Italy is saying it may open its in Mar 21, Spain is saying Dec 20, Australia is saying it might not be until mid 21. So EK planners are in a state of flux. They are doing their best to get the game on the road, but have to abide by varying national restrictions.