Amazon launched it's Amazon HD music streaming service today. Much more to come as details come out and people sign up. The cost is $12.99 for Prime members and $14.99 for everyone else. An interesting quote from Neil Young on this announcement, "earth will be changed forever when Amazon introduces high-quality streaming to the masses.”
So far it looks like CD quality music and "higher" up through 24/192. No mention of MQA in the first press releases.
I'm attempting to sign up right now and will release more as I have more.
Here's a link to get details from Amazon and sign up. It's an affiliate link so we make a a couple pennies if you sign up. We are beta testing this on items like books and music.