There have been some significant changes to I Bonds since my original I Bond post in May 2011 and my I Bond update in June 2011, and CD rates have continued to fall since my previous CD posts. Following is a summary of the I Bond changes, and my latest recommendations for how you might use I Bonds and CDs in your investment portfolio. If not mentioned here, the information in my previous I Bond and CD articles still applies, so refer to those for more details.