The British MOD (Ministry of Defense) Grand Challenge had some announcements in January. They're looking for a contractor to support the MOD Grand Challenge event. They also made some changes to the MOD Grand Challenge plans based on observing the U.S. DARPA Urban Challenge, such as making it a 2-phase competition.
Here's a blog from one of the MOD Grand Challenge teams - this one from Reading University. The MOD site has much more on all the teams on their teams page.
Meanwhile, the U.S. Wearable Power Prize site has some fairly new updates involving Instructions and Guidelines for teams as they make and send in certain required documents:
Fuel Plan Instructions
System Description White Paper
Finally, in the Military Prizes section on the right I've updated the Singapore TechX Challenge link which apparently moved.