From a functionality point of view: In a quick nutshell: HR21 = HR20 - ATSC
Everthing that the is going to be available on the HR20 will be available on the HR21... and vice versa... (after normal "time periods between software releases")
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From a functionality point of view:
In a quick nutshell: HR21 = HR20 - ATSC
Everthing that the is going to be available on the HR20 will be available on the HR21... and vice versa... (after normal "time periods between software releases")