Is there a future for Firefox on the Mac Power PC platform (such as G4 and G5)?

I just bought a PowerMac dual G5, because I didn't see a point going to the Intel based ones, as I could just buy a PC at that point. I was hoping that Mozilla would keep making a browser for the PowerPC based Mac's running 10.5. Seems everyone is discontinuing application support for the PowerPC version of Mac OS 10.5. I wanted to know if there was one in the works or not. I know mozilla is still supporting Windows XP, which is a much older operating system than Mac OS 10.5.