In this CBR Online article the future of email and calendar components are discussed. At the recent Nokia Enterprise summit Andrew Moran, outlined some of the future plans which include built in support for both push and browser based email, better groupware functions and better support for vCard and vCalendar and support for iCalendar and iTip. The article concludes with an interesting discussion of Symbian's relationship with developers.
http://www.cbronline.com/article_news.asp?guid=B3726182-18BD-42EB-90BD-4E3B07F5B134