The mega-successful photo-sharing and iPhoneography icon, Instagram, with its gajillion users, has just undergone its first major upgrade since it hit the App store just under a year ago. It’s Instagram 2.0. It’s faster and it has a gamut of new features. Wanna know what’s new?

Well, first up is Live Filters, which means that you can apply whichever filter floats your boat before you snap your pic, and see what it looks like. As for those filters, they’ve introduced four new ones: Amaro, Rise, Hudson, and Valencia.

There’s a new tilt-shift doo-dad that’s super-fast: pinch, pan, and rotate and watch it all in live view.

In response to people’s requests for higher resolution images, they’ve done just that. If you use an iPhone 4, resolution has increased from 612×612 to 1936×1936. If you’re stuck with the iPhone 3GS, resolution is now 1536×1536.

Borders are now optional. Much better! And you can now rotate your photos so that they’re not stuck on their sides. Fabulous!

But it’s all still only available for devices-Apple. If you’re an Android user, no Instagram for you.

All the details are over on Instagram’s blog.