I still haven't received my copy of Aagaard's Stonewall II, but I have good hopes it will happen tomorrow. Meanwhile there are rumors that Collins' Attacking Repertoire for Black is now available from Amazon UK. There is a small discussion at Chess Publishing Forum about the reliability of Amazon's announcement. I remain skeptical as long as the book isn't listed on Batsford's/Anova's website.
Postscript 9th September 2007
Today I received unofficial but reliable information that the book will definitely not appear before October 15th and probably not before Christmas! A pity but not really a great surprise.