The Comcast logo and Peacock have been up there for a while ... this isn't a new story. That Curbed NY is from 2014. Comcast logo was there in May when I was in NYC. If you zoom in more - you can easily see the logo here.
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W-NNnnnnnnnnnbc, W-NNNNnnnnnnbc!
Edit: I see the "new" news now. The logo (although being up there for a while) has not been lit up at night until now, and the official building name change just occurred. But as stated above, the Comcast logo replaced the GE a while ago.