Those types of email are generally phishing. If you feel it is really from yahoo then do not reply directly to any information in the email. Sign into your yahoo account and go to their support links.

None of that information is required to open an account--most likely a hoax or identity theft.

to meet Erin.

The only I got was when I tried to view a "profile" on Yahoo and it wanted info because they were updating their formats, etc. That was a few weeks ago though.

You have a PM

DO NOT DO NOT GIVE IT TO THEM.

IT'S A SPAMMER TRYING TO PHISH INFO FROM YOU --
JUST DELETE IT AND DO NOT OPEN ANY ATTACHEMTNS

I've been fussing over Yahoo's PITA changes but have not gotten any such notices.  I use Yahoo Classic because I just am an ornary cuss.  I just peeked & didn't use my full correct name.

More than likely this is a phishing scam...  
skb