Nothing "supposed" about it. That is indeed a screenshot of the EOS wallet app. Visit the horse's mouth here: https://github.com/EOSIO/eos-wallet-app

This is of course still a work in progress, so unless you are a developer, I wouldn't suggest messing with it yet.

Shout out to my friends at https://tandem.ly who worked very hard to make the wallet app a reality! Now they are making it better and adding a new API so that this and other user facing apps will be able to seamlessly integrate with EOS.