Hulu officially announced the launch of its live TV streaming service this morning at its Upfront presentation in New York, after earlier promising its “under $40” offering would arrive sometime this spring. The service — which is actually $39.99 per month — has a robust channel lineup, cloud DVR and combines Hulu’s existing on-demand library, including its Originals, with streaming TV and on-demand content from its broadcast partners. However, a key part to the new service is the revamped,