Since Dante's Inferno is published by Electronic Arts, you can bet they aren't finished selling you the game once you've bought it. Hence the following paragraph in the press release about the game's retail availability next week:

In March, [developer] Visceral will release Dark Forest, a prequel level that tells the story of Dante's journey home and features new enemies, puzzles and relics. In April, players can download Trials of St. Lucia, a full expansion to the game that offers a co-operative multiplayer mode, a new playable character, and an in-game combat editor. The easy-to-use combat editor allows players to create custom combat trails, and then upload and share their creations online. In addition to Dark Forest and Trails of Saint Lucia, Dante's Inferno will offer downloadable packs containing souls, skins, relics and magics to further boost players on their journeys through Hell.

Did you get that bit about custom trails? That's either a typo -- I've ben guilty of those myself -- or a feature that lets you determines the color of those gratuitous tracers when something attacks (pictured). In which case, make mine pink with little purple stars!