There was going to be an adaptation of Hush styled around the 2004 The Batman cartoon after the The Batman vs Dracula movie. Rights issues got it scrapped.
The Batman was a really solid setting, so it would have been interesting to see how they’d reimagine Hush.

The Batman (2004) was going to adapt the Hush storyline, their attempt to adapt it into an episode was scrapped due to rights issues and replaced with the character Rumor and the episode "Rumors."
The second attempt was to make it a full fledged animated movie in the same vein as The Batman vs Dracula movie, but rights issues also led to it being scrapped.