The UserVoice widget (for submitting suggestions) has changed. Instead of the orange "Feedback" tab on the left side of the page, you will now see an orange light bulb in the upper right corner. Click on that, and it will ask you to choose between two existing ideas, or to post a new idea. After choosing between features, the widget will ask you to compare more features (until you quit or post your own idea).
Looks like this is skin-dependent. I only see it with the Antiquark-JP style.