I really hope that the single successor will be JPEG-XL. It's much better format for still pictures (faster encoding and decoding, higher quality, almost unlim

I really hope that the single successor will be JPEG-XL. It's much better format for still pictures (faster encoding and decoding, higher quality, almost unlimited picture size, layers, color channels, etc), and the ability to losslessly recompress existing JPEGs is huge.