Announced during E3 two years ago, the Minecraft Super Duper Graphics Pack would introduce higher textures and other graphical improvements to the massively popular block-building game. The update was initially meant to launch in 2017 but unfortunately saw several delays.
It seems these delays did not help Mojang bring the project to completion. Mojang announced the cancellation today in a blog post, stating that "the pack proved too technically demanding to implement as planned".
The studio went on to say "We realise this is disappointing to some of you – there was a lot of enthusiasm for Super Duper from inside and outside the studio – but unfortunately, we aren’t happy with how the pack performed across devices. For this reason, we're stopping development on the pack, and looking into other ways for you to experience Minecraft with a new look".
It's highly likely that Mojang's push for platform parity lead to the cancellation. Mobile devices would have had a hard time keeping pace with the PC and console versions, and Mojang has been vocal on wanting to provide all players with the same experience.
I can't help but wonder if Mojang is putting the update to the side for future implementation once the next generation consoles arrive.