There are many ways to take what you asked:
If you're asking them to delegate some of the coding to you - go to the gradle, look at the workload and maybe try being proactive - i'm not sure about their contributor guidelines - but i'm reasonably certain that if you're a highly proficient coder, messaging someone directly is a good plan (not posting here).
If you're asking to test work - go to files.minecraftforge.net - if there is something to be tested, it's there. If there isn't - it doesn't exist.
If you're asking for a status update - go to files.minecraftforge.net - if its ready - it's there - if it isn't, it isn't there. Asking for a percentage done estimate for a project of this size isn't really ok. They are updating people plenty - if you're jonesing for an update, printscreen and photoshop it to today's date, then stare at it and pretend they just updated you. Additionally - 1.6.4 is still there waiting for you - all pretty and moddable and stuff.