Hey, those might get bundled up at some point, but as a couple of releases are coming, I think i will release a couple more and then make another package with -4 set sin conjunction with the currently existing 32x32 set, to offer people who bought the 32x32 bundle in the past an option to get the new ones.
It's not unusual or my store that new sets only get added to bundles a couple of months past their release date.