The early adopters have it easier, and anyone running Vista or Office 2007 can easily get their updates. The Vista Service Pack 1 Release Candidate is available at that link, or supposedly via Windows Update. Bear in mind, this is a Release Candidate, so it is like a beta version that has had it’s shots; you might still catch something nasty, but the chances are less likely that if you were hanging out with the beta crowd. If you scroll down past the happy shiny bit on this page, you can get an overview of what to expect from Vista SP1 RC.
Finally, anyone who is actually still using Office 2007 (a number far smaller than the number who purchased it), the official 1st Service Pack has arrived. One the one hand, it doesn’t kill the ribbons, nor add a torture Clippy and his animated friends button; on the other, it does incorporate a load of security fixes and the list of known issues isn’t too scary.