I am not a google employee, but I have pestered them all about this
issue.
Let me summarize the bad news:
The data api is not on the slate any time soon.
All platforms will launch with version 0.7 at least, which will not
have data api.
For some reason, there is no consensus being built, nor pressure being
applied to getting it resolved.
And there are so many other things to distract them, that most are
probably happy to ignore the data api issue (very sadly).
I would still like to hear the official line from anyone in power
though! :)
as an app developer it's sad that I have to reimplement my app by a
lot, and maintain a totally different system between platforms, with
no hope for refactoring.. sigh :) :)