I want to install a theme from magento connect manager but I am unable to find the mangento connect manager in admin panel of my magento 2 . How do I install the theme using extension key in magento 2.0?
Connect for Magento 2 just does not exist yet.
If you want install a theme or an extension you should contact to the theme/extension developer for an installation instuctions.
That was December 2015, now is June 2016, seems like there's no visible progress here. I was going to recommend M2 for a couple of large projects, but unfinished M2 features such as this make it more and more difficult. Any update ?