Normally I don't do addenda for month old posts. But somehow I've overlooked something cool (and since I had already shared this on my twitter account I thought I should share this with you as well).
You may recognize the following image from Halloween 2012. For some reason Anet decided to add a new version (841374) of it to the dat file. It can be found alongside the Assassin outfit, home portal stone and the new Hairstyle gemstore images.
Why this image suddenly got an updated version is still a mystery, but with a bit of luck it's an indication that those old Halloween skins might return.
Disclaimer - more than ever I do recommend: please, don't get your hopes up too high.