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Kevin Systrom has had quite the busy week.
Fresh from nixing his revamped terms of service that caused such a stir on Tuesday -- and doing a 180-degree turn on those terms of service Thursday -- the Instagram co-founder has launched a significant update to his iPhone app.
The update adds a brand-new photo filter, "Mayfair", which brings the app's total number of filters up to 20. Its previous update, just 10 days ago, also added a new filter, "Willow". This is a veritable flurry of new filters by Instagram's standards; prior to Willow, the app hadn't added any new filters since September 2011.