Microsoft Corp.'s Mac Business Unit (MacBU) on Tuesday announced the availability of Office 2004 for Mac Service Pack 1, an update for the latest Macintosh release of the company's popular productivity application software suite. The service pack "addresses potential security issues and bugs that [user] feedback played an important role in identifying," according to Microsoft. What's more, the new version features support for Microsoft Error Reporting Protocol (MERP), which allows customers to send bug reports to Microsoft anonymously.
Source: MacCentral
Here is the full list of changes in Office 11.1.0 a.k.a. Office 2004. I myself notice no change, but considering the amount of bullet points on that change log, it looks like they fixed a lot.
