Oh look, another text editor. Just use TextMate if you're on Mac OS X. If you want something cross platform use Sublime Text, and if you want to be awesome and have a few days to customize and learn use VIM or Emacs. I use Sublime Text on my laptops and desktops and vim on my servers. It's the only editors I need for any operating system and any situation.
Is this the reason people commenting seem legitimately excited? I'm a Linux/vim guy; I appreciate when people make lean, straightforward 'simple' applications but this just appears to be a Macified version of vim... since TextMate was supposed to be Macified vim, I couldn't really see the point.
I hate to be a neckbeard on this one, but I get irritated when Mac guys conflate 'simple' and 'graphical'. If this editor had been designed for a niche application (subethaedit), kept track of your most-used features and only emphasized those, or did something to simplify your overall editing experience I would be all for it. Instead I see an editor that replaced vim's look with a graphical one, like the palette swaps old videogames used to turn the good guys into the bad (same with versions of NetHack that had graphical tiles). Reminds me of that weird TermKit thing: http://news.ycombinator.com/item?id=2559734
I really want to break out of the terminal. It's crufty and old, but what's more disappointing is that no contender has yet matched or even surpassed its zen. Come on guys, build it already.
I think zen is the keyword. Apps like textmate or this one or mac os/apps in general are not simple because it's cool to be simple - they just hide the power that's under the hood so your tired eyes and brain can focus on the task at hand. But ultimately it's about your own zen: whatever makes each one happier and more productive, be it eclipse, netbeans, vim or textmate.
