I too would be interested in knowing where you found that. It has a beautiful interface and solves my #1 annoyance with google hangouts which is: "Where do I go to start one?". Every time I try to use Hangouts I invite a friend but they never get the invite or the other way around and we spend 5min getting it setup when we could have used Skype and had zero issues. Trust me I am all for getting off Skype but hangouts has neither been easy or fast to get going in my experience.
You have always been able to just visit https://plus.google.com/hangouts/_/ to directly open a new empty hangout. This is equivalent to clicking "New Video Hangout" in the G+ sidebar. Also, you can give anyone a direct link to any hangout (e.g. via email or text).
