We have been fairly quiet publicly, but many subsystems are coming to completion rapidly, including the helium gas overflow vent valve. Completion of anything flying on a ballon means it's time to do some science! Tests must be done, data must be noted, hypotheses checked. Gary Flispart and I put together a detailed technical video explanation of the vacuum leak test system we've made.
Stay tuned for more updates at http://whitestarballoon.org , we are on track to launch in the next month or two!
White Star Team Lead