Theme.FM has a great writeup explaining one of the new features that is slated to arrive with WordPress 3.3 called Pointers. These pointers appear to show the end user some information related to a new feature. However, it looks as though in future versions of WordPress, there will be an API built around pointers which should allow plugin and theme authors to tap into it’s usefulness. If you don’t like the pointers feature, WPEngineer has an explanation as to how to disable it. Keep in mind though, that the information is based on the nightly build of WordPress so the implementation could be different later on.
New Feature Pointers Slated For WordPress 3.3