For the people who contacted me over the past several months to ask about Visual Studio .NET 2003 SP1 (English), it’s now available for download.
This download installs Service Pack 1 for Microsoft® Visual Studio® .NET™ 2003. Fixes in this Service Pack concern stability and security enhancements made in many areas of the product. A comprehensive list of hotfixes requested by customers since the release of Visual Studio® .NET™ 2003 and included in this Service Pack can be found by following the appropriate link under Related Resources on this page.
You can also download the Visual Studio .NET 2003 SP1 Release Notes (English).
UPDATE: I updated the links to point specifically at the English releases to ensure the links resolve. Use the dropdown on the download details page to select a different language.