News via http://www.romhacking.net/forum/inde...pic,12242.html

SonED2, the Sonic the Hedgehog data editor, has received the following updates:
  • Level editing support for Sonic 3 (& Knuckles), Sonic CD, and Knuckles’ Chaotix/Sonic Crackers
  • Support for editing Sonic 1 Rotating Special Stages
  • Project support for custom level data format combinations
  • Level layout import from image support in addition to existing tile graphic importing
  • Integrated functionality of the new ROMulan data Extractor/Injector utility
  • Better settings modifying support- larger click areas and delayed-repeat hotkeys
  • Various other feature and interface enhancements and fixes
For a more detailed list, see the “What’s New” documentation
RHDN Project Page
Relevant Link: (http://stealth.hapisan.com)