NASA is in the process of getting a new space suit design for the Constellation program. The program aims to send humans deeper into space and eventually to Mars. Currently, there are two prototypes for new suits, a slimmer and maneuverable version launch and spacewalks, and a heavier suit for walking on the moon. The designs will allow for more protection and mobility in future missions to come.
Did you know that astronauts wear diapers under their suits during spacewalks?
A great overview of spacesuit evolution over the years can be found here.