In a few days, the European Commission will meet and decide the fate of Microsoft's presence in the EU. Primarily, they will be deciding whether or not heavy fines will be levied against Microsoft for monopoly abuse, which they found Microsoft “guilty” of a while back. Microsoft of course appealed the decision, and after this we'll find out what the outcome of that appeal will be. The answers won't come quickly, however:

But sources within the Commission are telling the Reg there won't be any announcement next week. They predict the Court of First Instance verdict won't be ready for its waiting public until October at the earliest.
This isn't likely to change Microsoft's behavior in the U.S., but could lead to various different regional versions of Windows, with software bundled differently from country to country.