With the Ghost platform recently launched and proving to be a viable medium for easy publishing and a clean writing style, it comes as no surprise that Wordpress finally supports writing in Markdown. For those that are unfamiliar with the style, here's the definitely from creator John Gruber.
Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML).
I've been learning how to write in Markdown and have installed awesome plugins for support in my Wordpress site such as Markdown on Save Improved and WP-Footnotes. Of course with this launching, I suppose I can turn these off now but I still have yet to find where to "activate" the setting.
You can find a quick reference guide here.