Latest available builds are:
With lots of work going in before the feature-freeze, it is somehow expected that the tinderboxes are hard to keep running - there were some particularly nasty liblangtag issues stopping them from building.
OTOH - Win-x86@6/master has a build from today as of now; and Fridrich is repairing the others.
Can confirm progress, @6 and @z already have 4.0 builds
tinderboxes look pretty green to me now.