The SPBizConf (https://www.spbizconf.com/ ) will happen on June 17th and 18th of 2015.
This conference is mostly oriented towards business users (with a bit of technical content) and is free and online.
Don’t wait to sign up!
I’ll have the opportunity to give a session about the Graph. We’ll have a theoretical part to ensure everybody has got basis, a part talking about Microsoft’s Graph and Microsoft’s vision around the Graph to wrap up with a part with real business cases and explain how you could use it in your company.