Seems as though the Gingerbread love is being spread rather nicely. While a Gingerbread ROM leaked for the HTC Desire HD earlier, ROM cookers have already started building it in to their now updated releases. Personally, I'd stick to one that was pre-rooted rather then downloading the original leaked ROM but for testing purposes that is what you are all seeing in the screenshot -- the base leaked version.
Either way, if you're looking to check out Gingerbread on your Desire HD hit up the source link for more details. Just remember, it is rather buggy as it is not a final release but it'll give you a taste of Gingerbread and HTC Sense v2.1. Here's to hoping we see an official rollout sooner rather than later. [XDA]