Comment 9 for bug 181157

Ok, I see them in interfaces/distroseries.py.

I think that set would be fine. The comments on them are currently distroseries-specific and perhaps should be changed if they are used more generally. The "pending release" discussed above would be covered by FROZEN.

I think there may still be value in adding a "Future" status for something that is being planned but for which no code exists at the moment; this is a bit different to "Experimental".