Looks like the 'Metro UI' thing is starting to catch on and why not? Much like how the iPhone OS can be all-blowns-up for the iPad, why not influence the desktop or browser with Microsoft's mobile UI.
Turns out Long Zheng of iStartedSomething and some pals have been working on a desktop Twitter app that looks exceptionally clean, minimalist and darn useful.
The app has been in very early stages of development, meaning they're focusing on features, not yet de-bugging and has been circulating amongst a small group of users.
Long story short, website MeuWindows figured out the URL for the download link and even bypassed the authentication...just so they could try it. Luckily Long Zheng took this as flattery and there you go.
Actually, you can now sign up for the actual beta (bottom of the page), which is expected sooner than later. We're down with that!