Since Exchange 2010 will support (reportedly) OWA premium from non IE browsers is there any chance that MS will add that same functionality in a service pack for Exchange 2007?

Not only reportedly, it's terrific: Exchange 2010: OWA, screen shot taken from Safari 4.0 on the Machttp://www.robichaux.net/blog/2009/04/exchange-2010-owa.php This video demonstrates Firefox and Safari on the MacIntroducing Outlook Live for schools - and cool new features for everyonehttp://msexchangeteam.com/archive/2009/02/12/450639.aspxBeing a Mac user and Exchange Enterprise Administrator, I keep my ears and eyes wide open. No official statement has been made suggesting that Microsoft would add Exchange 2007 OWA Premium support for Safari and Firefox, not even the slightest rumor. I doubt it, because MS already has a product that addresses these and a lot more other issues. Might be wrong. Who knows?While several years old, here you can get some information on the Exchange Team's reasoning:Microsoft Outlook Web Access Light 2007http://msexchangeteam.com/archive/2006/09/13/428901.aspxMCTS: Messaging | MCSE: S+M | Small Business Specialist