Hell make Newt part of his team as he said—at least so long as Newt is willing. Be patient. Im sure hed prefer to make a big deal out of it and not just list him in a press release with a bunch of people most have never heard of. Id like to see him gradually roll out his list of people he wants to appoint to the cabinet and other important positions with a lot of fanfare. If he does one a week lets say, then hed get a whole lot of free publicity from it.
If Newts just going to be a chief advisor or something more informal like that, he may not make such a big deal of it (though Im sure he wouldnt want even that interfering with his new VP announcement), but hell want to get a lot of press from it if Newts going to be his Secretary of State, Chief of Staff, or any other really noteworthy position. In the meanwhile, Im sure Newt will continue advising Trump behind the scenes, as he has for months. Why wouldnt he?