Witch 4.1 is out, and the big news here is badges: You can now see Mail’s unread message count on Mail icons in the Witch switcher panel. Witch also has a soon-to-be-public API that other developers can use to make it simple to send badge data to other apps, including Witch—hopefully we’ll see more badges coming to Witch in the future.
In addition to the badges, we did a ton of work to improve Witch’s speed when working with slow-to-respond (to Witch’s queries) apps. We’ve also improved cross-Space window switching, and we found and fixed a memory leak that could make Witch’s RAM usage balloon if you used a lot of window previews.
You can find other goodness in the Witch release notes, and you can update to Witch 4.1 either via the in-app updater, or by downloading a fresh copy from the Witch page (you won’t lose your settings).