EE savings bonds purchased after May 1 will have their interest rates fixed at the time of purchase, instead of floating at 90% of the average 5 year treasury rate. I read this as a strong signal that the treasury dept thinks rates will continue rising and they don't want to be stuck with the bill. Based on this, I'm thinking of buying some more EEs before the deadline.
http://www.publicdebt.treas.gov/com/comeefixedrate.htm
http://www.publicdebt.treas.gov/com/comeefixedrate.htm