It starting to appear that Apple may be dropping support for running PowerPC applications on the upcoming Mac OS X 10.7 “Lion” release. If this is true, since Remember? is currently PowerPC only, that would mean that Remember? will not run on Mac OS X 10.7 making Mac OS X 10.6 the last supported OS version.
If this does come to pass I will provide a method to export existing occasion data to iCal format to ease the transition but I can’t promise that Remember? itself will be converted to run on “Lion.” I’ll be more specific once Apple provides a 10.7 release date and confirms that PowerPC apps won’t be supported.
There are a few more details on the Remember? product page.