GalForge and ParticleForge won't need updating (I have this on the word of Josie, as I asked in an email to support) for 1.04/1.18.
As for TXTed Reference files, the current converters SHOULD work with the new ConvertData's. What I am worried about though (and many others I suspect), is if they will release the Dev.exe's for this patch.
The only way to find out that I can think of is if we start bombarding them with Q's about whether or not the will.