Because it usually adds extra goodies, and sometimes speeds up code. In addition, it could also use new technology.
Commerical industry will, yes (but then they have a very good reason too). However, the average Joe Bloggs will be camping outside their nearest computer store a few days before its released, ready to get their grubby mitts on it.
Vista is arguably more "up to date" than XP is too, yet the industry at large is taking a very precautious stance at upgrading any time soon
Commerical industry will, yes (but then they have a very good reason too). However, the average Joe Bloggs will be camping outside their nearest computer store a few days before its released, ready to get their grubby mitts on it.