VoodooPad was bumped up to version 3.2.3 the other day, bringing bug fixes on 10.5 Leopard. And then yesterday it was silently released again as 3.2.3a (I borked the spell checker!). Here are the release notes.
And today Acorn has been updated to version 1.0.3, providing some bug fixes and adding some new features. I finally added a way to free rotate the canvas! (hurray?). Acorn 1.0.3 also adds a Quick Look plugin for folks on 10.5. I should also note that the source to the Quick Look plugin is freely available, effectively documenting Acorn's file format. Read up on Acorn release notes.