I have a slightly related question for the release team, and apologies in advance if I'm hijacking this thread.
WPE WebKit, the other major port of WebKit in Debian is also introducing a new API in 2.40.0, although in this case the old API will still be available (but deprecated) for a time. Unlike WebKitGTK, WPE WebKit only has two reverse dependencies: cog (a mini browser developed by the same upstream team) and a GStreamer plugin (gstreamer1.0-wpe, part of the -plugins-bad set). None of these packages plays a prominent role in the distribution so I think a transition could be handled with very low risk. However I also realize that we're quite late in the freeze period, so I would like to ask: is it a good idea that I try to handle a transition for WPE WebKit? I will understand if the answer is negative. Thanks! Berto