It's on
https://www.regnow.c...ell.cgi?item=17447-5 (50% discount)
About Macrium licensing policy, I found on their support forum that one get free updates for all minor versions (4.x), and that the next major version will be free if the purchase of the current version occurs three months before or less.
Version 5 was supposed to be released by the end of 2009.
