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Google Apps, first launched as a free service in August 2006, is now a commercial product available to users for $50 per user account per year. It debuts with Procter & Gamble Global Business Services as a marquee account -- not that Google needed one. Since its initial launch in August, more than 100,000 small businesses and hundreds of universities have signed on to the service, according to Google. The commercial suite, called Google Apps Premier Edition, is a new version of Google's original hosted communication and collaboration applications.
I have heard about another latest version after this suite(Google Apps Premier Edition).it is going to be launched soon.