NASA recently released a new prototype spacesuit for future Martian exploration. The Z-2 design can effectively “dock” with a Mars rover or with some sort of habitation placed on the surface. A little like this:
A major advantage of this sort of design is that you can keep the Martian dirt on the outside and never track it through an airlock.
Of course, this design will likely go through many more iterations in the next two decades leading up to launch. If you want to get involved, NASA is looking for new astronauts! The job application opens in December, 2015. You need to have at least a bachelor’s degree in Science, Engineering, or Math with a few years of experience in those fields. Best of luck!