From Sedar:
Meeting Type :
Annual General and Special Meeting (AMENDED)
Record Date for Notice of Meeting :
07/04/2011 (AMENDED)
Record Date for Voting (if applicable) :
07/04/2011
Beneficial Ownership Determination Date :
07/04/2011
Meeting Date :
12/05/2011 (AMENDED)
Meeting Location (if available) :
So, yep, looks like April 7, 2011.