I’ve updated Where to find Inform 7 Extensions to mention the Vorple downloads page for Vorple, and finally updated Inform 7 documentation and resources to replace most of its Extensions section with a link to the Where to find I7 Extensions post.
I’ve brought this up before, but I think v10’s imminence makes it more relevant – there are 3 separate sticky threads about extension updating and compatibility dating to 6L02/6L38 in the Inform Extensions subcategory. I think their stickiness has outlived its value at this point.