We now have support for APNG 0.8 in the tree thanks to the hard work and patience of Andrew Smith. APNG 1.0 should show up sometime in the next couple of weeks as we try to integrate recent comments in to the spec and work out some error cases in the spec. We’re going to have to make one large (but simple) spec change once we hear back from the PNG group in that we want the chunk names to be public (i.e. aCTl instead of acTl) as APNG is clearly designed to be used publicly.
Andrew has done both APNG read and write support as a patch to libpng so other applications can add support for APNGs with ease!
It is really great to see this finally coming to life. This is something that the web has been missing for quite some time.