I've released a new version of d20tools. In addition to using a new, simpler file saving/loading scheme and better keyboard handling, the new feature is also a lot more stable. Other highlights include a more sensible entity/group management system, and the ability for any creature to be a henchman.

Get it here.

I'm lifting my moratorium on D&D 4e, as well. This means that d20tools will eventually support 4e creatures. However, this is a huge undertaking, and I have to decide how best to handle it. I'm leaning towards a system that will allow anyone to write system templates; then, any gaming system could be plugged in, theoretically. In practice, this is a lot of work for a single developer, so I wouldn't anticipate this happening any time soon.