Will the new game be closer to Avernum or to Geneforge in style? For example, will you be shooting for more or a linear or open world, a faction-based or non-faction based world, or party-based or solo adventures?
The game is based more on the Geneforge engine. It will have a linear world, but with many player choices. It wouldn't be one of my games without giving the player the ability to make huge choices that affect the world. There will be factions, and there is a dominant power that the player has a very complicated relationship with.
The game will have a three person party (although there are also solo portions). The game is very class-based. There are four classes, each with a very distinct suite of abilities and play style.