On the official site they state that the 1.09 beta patch (official will be the 1.11 patch) and the initial stages of the tool kit (siege editor and siege university) will be released soon... possibly ...

Developed by the fresh-faced Seed Studios, the upcoming Under Siege features an extensive ‘Editor’ mode that allows users to play, create, and share custom-made game content. While developing the real ...

There's a new video for Under Siege posted after the break showing how Seed Studios created the RTS using the in-game level editor. "One of the major features of Under Siege is our in game editor", ...

The Siege Editor version 1.09B.306 has been released today and is available for download from Microsoft's Dungeon Siege site. This new Beta build addresses several issues, including the tank converter ...