Flash opens up
Gnash actually has a fair support for the SWF format, but because of the legal restrictions around the spec they were never allowed to read the spec. Now they should be able to implement the full SWF format easily.
I've been following a lot of adobe/macromedia blogs over the years through MXNA (currently down) and attended some flash conferences, and about half of the flash developers always seem to use the argument 'if there's other flash players out there, incompatibilities will arise', basically favouring a closed spec. I always had a feeling this was strongly influenced by Adobe/MM propaganda, so it will be interesting to see if the majority of the community changes their opinion after this news.