I asked about this some time ago in the irc channel and the screenshot you mention uses indeed another version of the code completion. The current version is imho quite crippled. I hope that someone steps up and takes this to the level from version RC2.
I wonder how many devs actually are working on this IDE. And if there is some kind of roadmap which gives an idea of what we, users, can expect in what timeframe.
Cheers,
San