Ubuntu core update corresponding to Zesty?

[Dan Kegel]

I need a newer gstreamer than is shipped in Ubuntu Core 16
(gst-omx doesn't build against 1.8, but does against 1.10).
I can build the whole gstreamer stack from source, but going forward
would like to avoid that.

Is there a Ubuntu Core daily somewhere corresponding to Zesty?
Or when Zesty's alpha 1 comes out, will there a corresponding Ubuntu
Core alpha build?

(And come to think of it, I don't see gst-omx for rpi in Zesty, that'd
be nice to have...)