I am using firetv 2nd gen, but this above feature come to my fire tv around 15 days back, but still this new theme has not come to 2nd gen fire tv. So I think this feature is now for everyone. This feature is really helpful and we have total control with fire tv remote of tatasky and fire tv, very smartly it changes between the two. One just need to put it to best of use with voice pattern and few commands, which Alexa will start picking after some time.