MIT researchers have developed a new kind of aerodynamic space suit to allow for "greater mobility", called the BioSuit. It basically "relies on mechanical counter-pressure, which involves wrapping tight layers of material around the body," rather than gas pressurization. A release date has not yet been set.
The trick is to make a suit that is skintight but stretches with the body, allowing freedom of movement. Key to their design is the pattern of lines on the suit, which correspond to lines of non-extension (lines on the skin that don't extend when you move your leg). Those lines provide a stiff "skeleton" of structural support, while providing maximal mobility[via Geekologie]