Lockergnome
Lockergnome - Chris Pirrillo's 130,000 readers newsletter. He invites newsletters to let him know about their pubs if you get mentioned in it, it could be worth 1,000 subscribers PLUS. It better be good though, he doesn't go for crap. Excellent reading and tips in his newsletter too.

NEW-LIST - This is one of the better known announcement lists. They allow you to announce your new list or zine. Approx. circulation is 19,000-20,000. Be sure to read their submission guidelines before posting. You also have to subscribe to post to the list. We suggest subscribing, and view some of the posts to the list before posting your listing. This list can draw  50-300+ subscribers with your first listing, depending upon the effectiveness of your listing. 
Posting Guidelines
Subscribe Instructions

AAnnounce
Click here to subscribe to  AAnnounce
AAnnounce is a list for the announcement of new lists and newletters. Good resource! Plenty of announcements come from this list, so be prepared, no junk either.

LaunchPad
"LaunchPad is a platform, where you can announce your website url with brief description to thousands of people around the world, free of cost. Your details are also get listed in LaunchPad database...permanently."

CyberMessenger E'Zine
"Do you have, or know someone who has an interesting web site or page, stories, news, information that our subscribers could read about? E-mail us with the words "for your information" in the subject, and tell us all about it. We'll let you know if it's fit to print."  You can also subscribe to their newletter which the announcements come out in.

Mailman
"If you have a mailing list or e-zine that you would like to promote, this is where to do it! Please make your announcements concise and to the point. You may repost but not more often than once
a week. This list is currently unmoderated, but remember it is accessable to children, so please do not post anything that might offend. If you do it will be retromoderated!"

Emaillist Managers List At Onelist - 
This is not an annoucement list, but a group of list and newsletter owners
that offer each other support and answer questions for newbies too. 
All list owners are invited to join. A high volume list.
Subscribe: emaillist-managers-subscribe@onelist.com

Ezine-Swap Newsletter
This is not a announcement list as such but it will help you build subscribers fast! Want to swap ads or links with other sites and newsletters and lists? Check out Ezine-Swap Weekly Newsletter. Build traffic or subs!