I was just about to start a new thread on this exact subject!
First off, this is a *GREAT* new feature but hopefully it's just a start. This morning was the first time that our users started getting these emails and I've gotten no less than 30 people asking if it was legit or not because the email is extremely spammy-looking. If we can't customize the email template (which hopefully is coming soon) can we at least see a default email with much more information in it?
Ideally, the email should have as a minimum what the password policy is and why the user's current password is violating it. It should also have some clear instructions for the user on *how* to change their password - and even better with links and/or videos.
And as others have mentioned already, the fact that the email comes "from" nobody also makes people very suspicious (which they should be).