My favorite iPhone artmaking app, Sketches, has been updated again, this time to version 1.7. It's been made compatible with the iPhone 3.0 firmware, which means you no longer have to leave the app to share your pictures via email, and they've added in a few other bug fixes and improvements which will set them up for the next major release, the big 2.0.
This release isn't done yet though: "Redo" has been added in -- when you hold the Undo button down in the app, you'll get a whole menu of different options to go to various points in what you've done so far. And the Zoom function has been tweaked and improved as well, offering a quicker response and a better resolution, even when zoomed in.
I'm a big fan of Sketches, and expecially of the app's ability to let you pull in a background from almost anywhere (from your phone's camera to the Google Maps app), and then make your own marks on it. It's more than just an art app -- I've used it as a memory jogger, and even as a way to quickly send directions out to others via email or Twitter. It's available to new users on the App Store for $4.99, or the 1.7 update is free to those who already have it.