IANAL but my understanding is that bundling is only an antitrust violation when you have a monopoly. They were already offering cable/internet bundles in these areas with cost savings, so I don't see how this changes anything from the antitrust standpoint.
Very unlikely that Netflix will have any problems whatsoever at any of the speeds being discussed. Netflix only needs around 10Mbps to run very, very well.
[1] https://en.wikipedia.org/wiki/Bundling_(antitrust_law)