I used Mockingbird a while ago (& loved it) but since then I had forgotten all about it.
I got the email notification about these upgrades this morning and it was poorly written. You might want to re-visit the text and look it over. I've deleted it now so can't quote you specifics but I remember seeing lines advising that services would be available until Jan 2010 etc.
It would have also helped having a line at the top simply stating what Mockingbird is for those of us who may have forgotten.
(great product though; I'll be trying it again now I've been reminded it exists)