nope, been around for years. I remember using them in the pen of a graphics tablet I owned once. They are only really used in small, low drain devices like that.trivia: If you open a 9v battery, you will quite often find 6 AAAA batteries.
I needed to pick up 3 of them myself for a pen light that Zach sent me but nowhere local was selling them so I tried the trick of opening up a 9V battery, what I found was 6xflat batteries not AAAA's. I'll have a look for them in Tesco next time I'm in though.
Are these new and what takes them?
Well, thanks to cerbera's heads-up on this I actually ended up at Tesco's and picked up a set for my pen light. Thanks mate.