Adobe.com: Release Adobe Fireworks to Open Source
change.org
change.org
But even if it is a more suitable candidate to open-source, I just don't think there's much in it for Adobe. It'll just cost a lot of money with the lawyers involved and the whole code-base will need to be reviewed.
From an article back then:
"Ward outlined the transition as having the following steps:
Today - Creation of Mailing List for Discussion
Summer 2007 - Public Bug Database and Daily Builds
Second Half 2007 - Flex 3 Released
December 2007 - Read Only SVN Access, Patches Welcome
2008 - Committers with Write Access, Creation of Possible Subprojects "
see: http://www.infoq.com/news/2007/04/flex-open-source