What I found quite strange is that they introduce a phone with the invitation of bookeh and that it's not ready. The keynote simply brushed it off as 'a fun little challenge for the staff to figure out', .. I think they just didn't get it done in time, and we got what we got. If that's the case, that the one reason the plus has a dual camera and they didn't include it in the beta, or in the final release, .... then I am not really surprised you're disappointed. You just got the basic optical zoom from the hardware working in the camera app, and not the full potential they probably made it for.
Just my opinion.