While I was browsing on the beta place website I went into the bug fixes section and by the looks of it RTM is being put underway and there will be no beta 3 for all of the testers. I guess MS wants to push this office out quick and find all of the bugs so they are workin on RTM.
For more info view the screenshot below.
Screenshot: Office 2003 RTM Info
News source: Windows XP Stuff