Two hotkeys now help Jing's capture crosshairs snap to common aspect ratios. Press Ctrl to maintain a 4:3 aspect ratio and Shift for 16:9 widescreen proportions. While locked into a ratio, dragging out the crosshair shows you boundaries for common screen measurements within that ratio that you can easily snap to, like 320?240 or 640?480. This is a nice addition in keeping with Jing's visual, low text-density design.
As usual, premium users get the most impressive addition. Subscribers to the $15-a-year Jing Pro can now record from their Web cam, and toggle between recording from the Web cam and from the screen. For more details and video clips, read the Jing blog here.