Mr Zuckerberg said the design focused on "rich stories, visual and engaging, your choice of different feeds...and a mobile inspired consistent UI (user interface)."
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ITV Border Political Editor Peter MacMahon says it's far to early to call this referendum.
A World War Two veteran has told ITV News he has fulfilled a boyhood dream by voting for an independent Scotland.
Speaking as a Scot - not the ITV News Scotland Correspondent - I am feeling a great anxiety about what lies ahead.