Since first announcing its Total Audience Measurement in October, Nielsen has maintained that the new tool, which will include viewers across all linear and digital platforms in a single metric, would be ready in time for networks and buyers to use during this year's upfronts.
But today, Nielsen officially put an end to those ambitious plans.
"Our clients have asked us to be sensitive to the upfront season," said Kelly Abcarian, svp, product leadership for Nielsen, at an upfront press breakfast today.

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