Samsung has been all over the map on this one. I can't explain why but if you consider a model, ask the seller if it does this as well as check out the web page. Be sure you tell the seller you will return products that fail to do what you want. No reason to keep such things today with all the other fine choices.
As to ARC, I ignore such as a failed promise.
I'm shopping for a new TV & soundbar combo, probably in 50" size HD or UHD (8850 or 6950 series if I go with Samsung). One of the best features of my current Panasonic Viera TV/bar setup is that the TV controls the soundbar so that it goes on and off with the TV and the TV volume control operates the soundbar volume.
I would like to keep this functionality and am wondering if any Samsung combination and hookup method will work this same way. One thing I saw mentioned when looking at a soundbar manual (HW-H450) was called SoundConnect or SoundShare and is a wireless audio/control interface between the TV and soundbar using an HDMI-ARC connection. However, none of the current TVs seem to mention this in either their spec sheets or user guides.
So is this still supported? And in any case, is there a TV-soundbar connection that makes it easy to adjust power and volume from the TV remote?