What you may not have heard is that this past week GE sold the remaining 49% to them too. So now Comcast owns MSNBC outright. It no longer has to even be in consultation with it's partner owner.
Even though MSNBC has lagged in the ratings competition with Fox News for ten years, GE never interfered with the liberal content on MSNBC. That was mainly because GE has a history of being in bed with liberal politics and liberal politicians. The company found it lucrative for them to do so.
BUT, we don't know what the politics of Comcast Cable is. And if Comcast has no allegiance to the liberal programming on MSNBC, they may be only interested in getting the ratings up so they can increase their revenues.
If that turns out to be the case, they could easily do a total revamp of the programming in effort to emulate the ratings success of Fox News.
In other words, of the three cable news operations, you could then see what amounts to two of the three be versions of Fox News.
Or if the insiders at MSNBC are aware that their bosses at Comcast are not happy with the ratings, that could influence the MSNBC management to start to mellow out on the content themselves (make it less liberal).