Ok, so I see that my major update does show up in the devlogs page, but it's far in the list. Even though the game, and therefore the post, just got indexed, the update appears far in the 'recent' list, as thought the time the post was made is used for sorting instead of the time the post was indexed, which basically means that my post was useless because it didn't show up in time to be meaningfully discoverable. Again, this leaves me quite disappointed with the Itch experience. I believe the team behind Itch should improve their system, as I think it's currently hugely flawed, frustrating, disappointing and unfair.