SERIES PREMIERE: Just a notation: Megyn Kellywhen leaving Fox News for NBC, positioned herself in a couple of high-profile places on her new network. One was Dateline NBC, where she entered with an attention-getting entrance by interviewing Vladimir Putin and others, then falling out of the spotlight. The other, long in the works, is her new show and showcase, which premieres today, on Today, as the show’s third hour, now retitled Megan Kelly Today. The first two hours of the show remain the Today show of old, and the fourth hour remains “the days of wine and neuroses” as presided over by Kathie Lee Gifford and Hoda Kotb. Consider Megan Kelly Today a transition pivot between those two very different types of program – which gives her a lot of freedom to set her own tone, whatever that might be.