There is a bunch of exciting new features in the upcoming version of Blend; bundles of ready-to-use behaviors, transition effects and more ways to add more interactivity with less code. All of which become even more rich with possibilities when you add the bevy of new, sketch style shapes to the mix. In the pursuit of producing, testing and sharing great ideas and interaction to facilitate instant communication and conversation with clients and teammates, this set of form assets is a big help. Adam Kinney posted an overview with tons of details here. The Release Candidate of Blend 4 is available for download here.
Previous post: Mind the Hand
Next post: Idea Sketch Sheets