Congratulations, everyone! I got the email this morning, too. I'm just glad I'm done with the stressful scholarship application process for the rest of my degree
I got waitlisted last year and didn't receive an email, only a letter in the mail. The email is from NSERC (double checked the headers), so I think it's reasonable to assume it's real.
For people in Canada who received a PGSD, you may get bumped up to a CGSD since people outside Canada can only hold a PGSD.