Instagram has just released its biggest iOS app update in a year, and it’s all about improving the publishing experience and heavier Instagram branding. First there’s a new Instagram-themed shutter and shutter-release button. A new image selector reminiscent of Facebook Camera makes it quicker to choose a recent shot. There’s also a new monochrome filter called Willow coming to iOS and Android today.

It’s been an eventful few weeks for the photo sharing app. It fired a shot in the photo wars, shutting off Twitter Cards support soInstagram photos are no longer shown as previews when people tweet their links. Meanwhile, rumors are swirling atAllThingsD that it will face new competition as soon as the holidays, as Twitter is polishing off and testing its own photo filtering system.


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