Just received prototypes for Atlas, Helio and also the new (to be named) headphone tonight.
All 3 are very good - only had limited time with each so far. Headphones in particular are brilliant - watch out for that KS when Bob eventually releases it.
I know there will be quite a bit of interest in Atlas and Helio - and I'll get you full impressions on both as soon as I can. First I need to talk to Bob about a couple of things, then I need to get some listening time. What I can tell you is that both look to be pretty good value - and especially at the KS pricing.
Thanks Paul! Sounds good! Waiting especially for the Atlas and Delta comparison
Hopefully the KS won't start too early, I'm broke now

About 2 weeks ago, me, @ojy89, and @RedTwilight, we had mini meet to try Delta and Hyperion. I hear quite a significant improvement on Delta as compared to Hyperion, especially on the treble part, smoother on the the Delta. Yet Hyperion is good and fun sounding, strong bass with sparkly treble, mild to moderate V shape tonality.

Update 3 Sept 2015:
After using it for a while after burn-in, somehow I feel the mids is a little too recess and bass a little too boomy for my taste. Using standard eartips. So I would say, it is ok for the price, but not at the level of giant killer yet.