I sent my application in around Feb 20th, and got my letter yesterday. I'm also a Canpass member if that makes a difference in timing.
Tried to leave a message with the YYZ enrollment centre, but their mailbox was full. Talked to a real person in YVR, so I'm going to get my interview done in Vancouver in 2 weeks.
Was it just my letter or do all letters seem like they're being printed on an inkjet printer, with a very low resolution Nexus logo?