Mozilla Webmaker
mozilla.org
mozilla.org
> "Mozilla Webmaker is a new program to help people everywhere make, learn and play using the open building blocks of the web."
So it's not a piece of software, technology or service. It's an effort to wrap existing tools and projects into a common program and get communities involved.
Thimble is a tool that will launch in a couple of weeks, and will tie a bunch of this stuff together (and hopefully allay some concerns).
The primary "actually new" things that launched yesterday were: -The events platform at webmaker.org (this is trying to bring distributed organizing to webmaking events; not really been done before) -The "Mozilla Webmaker" brand/site to tie some previously separate pieces/tools together into a more user-friendly package -Explanatory video to try and drive home what a webmaker is and why it's important
The biggest missing piece to this is Thimble, which will launch well before the Summer Code Party (https://webmaker.org/en-US/events/about/summer_campaign/) kicks off on June 23rd.
For those who still can't make heads or tails of the home page, I've created an enhanced version that will hopefully aid understanding: http://screencast.com/t/pnIFbr2sDRn
tl;dr: they are encouraging people to put together local web-hacker-learner-etc. events this summer on a particular date, and providing some resources to support those events.