The current singing syllabus is 2005-2006. Can anyone tell me exactly when it 'expires'? Do we get a new syllabus in September? Or in the next calendar year?

Usually it's available to use for the Spring session afterwards ie Spring 2007, can't remember when the new one comes out but have a feeling it's around September.

Yes, I think the new one should be out at the end of the summer, and you can use the current pieces for exams in the spring session of next year, although if technical requirements change you have to use the new ones (even if you're using pieces from the old syllabus) - but I guess that doesn't apply so much for singing?