Welcome to the Heroscapers 2.0 site! We've still got some dust to clear and adjustments to make, including launching a new front page, but we hope you enjoy the improvements to the site. Please post your feedback and any issues you encounter in this thread.
This is the final master set rulebook published by WotC. It's no longer available on their website, but I was able to download it from the Wayback Machine at the Internet Archive.