In a message posted to the company’s Website on Tuesday, Green Ronin Publishing President
In his post, Pramas called the terms of the GSL “one-sided as they stand” and said that, “We do not... feel that this license treats third-party publishers as valued partners.” He went on to say that while he does not feel that the current management at Wizards of the Coast would be likely to take legal action against a third-party publisher under the terms of the GSL, “Once you sign the GSL..., you open yourself up to that at any point in the future.”
Many of the company’s most popular product lines, including Mutants & Masterminds, Freeport: The City of Adventure, and True20 Adventure Roleplaying will still be published without 4th Edition rules, and their RPG based on the works of George R. R. Martin, A Song of Ice and Fire Roleplaying, is still scheduled for an October release (see “Green Ronin’s ‘A Song of Ice and Fire RPG’”).
In general, there does not seem to be as much excitement among third-party publishers for releasing 4th Edition product as there was for 3rd Edition (and 3.5). This is likely due to the more restrictive nature of the GSL as compared to the OGL (Open Game License, see “Interview with Scott Rouse, Part 1”). A few notable d20 stalwarts, including Mongoose Publishing (