[Evanesco]

Quick google search:

http://www.digitaltrends.com/home-theate...-ultra-hd/

http://www.techradar.com/news/television...4k-1255214

You can be certain that they will use Dolby Digital Plus to carry that Atmos data they talk about in this link. This is just the beginning.

And what exactly in those announcements makes you think they will use the obscure DD+/Atmos rather than the well known TrueHD+Atmos?

It could be a bandwidth issue, I have never heard of a streaming service using Lossless audio streams. Typically is DD or DD+, so there is some precendent there for them trying to use DD+Atmos since it would be easier on bandwidth. This is assuming most AVR's are equipped to handle this format. If DD+Atmos is a standard on all AVR's that support TrueHD/Atmos....

Exactly my words! Netflix for example, already use Dolby Digital Plus for streaming on their 4K material. Yes True HD is way to "heavy" for streaming. Thats why no streaming services are using it, only DD and DD+.
Thats exactly why it makes me think why DD+ will be used for Atmos content.