The update isn't released yet. There will be lots of changes. I know the odd time zone areas are on the list. We won't know until May, when we get the full list of changes/enhancements, if that changes or not.
Bob,
Current software is v5.03 you are already behind about three version. The update and instructions are posted under the product page and takes about 15-20 mins. It is up to you to wait for the next version or upgrade now. They are free of charge.