I've been seeing all these ads for Disney+ being included with Verizon Unlimited Plans. I thought that was only for new Verizon subscribers but that's not the case. If you're a current Verizon Unlimited subscriber than your eligible for a free year of Disney+. Verizon's version does not include ESPN or Hulu. Also, after the first year, they will start charging you for the service unless you cancel.
I haven't had a good chance to look at all of their lineup but at a quick glance, I don't see this service as being a threat to take down any other providers. They need to do some work on their interface. We experience a little buffering with their Firestick app but we're not seeing it with their iPad app. I know it's not a limitation of my home network as it's more than capable of uninterrupted streaming over several devices simultaneously.
The Disney+ service does allow for you to create multiple accounts to cover the members of your household. It also allows for up to four simultaneous streams. I've not tested that yet but that's how the service is described. They seem to have five main categories..... Disney, PIXAR, MARVEL, STAR WARS & National Geographic. They have a Disney+ Originals section that currently is limited to twelve shows. That list is going to need to expand quickly to keep my interest beyond my free year of service.
Bottom line IMO..... If you can get it for free, try it out. If you've got children, it's worth the subscription. Other than that, I'd give it some time before trying a free preview once they've expanded their lineup.