The 22th of february could be remembered as the G-day, the day Google released their Apps Premium service including already avaliable products. However, in this package they are free of ads, larger storage and tech support. See more coverage at TechCrunch or Cnet.
The most interesting point for me isn't a feature comparison with the Microsoft package (there is still a long way to go), which has been around since 1989, but more the fact that more and more business are moving to using the Internet as a platform for their business (and that Google starts charging for their services). Listen to a number of large business on their view of G-Apps.
One aspect often raised is if it's secure enough to have ones data on, for example, Googels servers. Find out more at those Zdnet blogs entries, the first and the other.