I don’t really understand what Disney Infinity Vision is. I’m not clear on what is IMAX and what’s faux-IMAX, and I don’t understand why we refer to “footlamberts” when discussing these. I’ve reached the limits of my technical expertise when deciding on a new soundbar and subwoofer for my home, so this is largely beyond me.
Still, the new kid on the block is this Infinity Vision, and there are some specs.

Apparently it is a certification for premium large format (PLF) theaters. When locked out of IMAX releases by other studios booking fast, big, and early, Disney introduced it in time for Avengers Endgame: Encore and, mainly, for Avengers : Doomsday.
In order to hit their marks for certification, the theater must feature a screen that is at least 45 feet/13.7 meters wide, have an immersive sound system like Dolby Atmos or 7.1, and brightness levels must reach either 14 footlamberts in 2D and/or 6 footlamberts in 3D. This is more than double the number of IMAX certified venues.
A report in Bloomberg now says that Disney is going aggressive with the certification and is in talks with other studios to open it up as a label they can apply to their movies, too.
Paramount, Universal, Sony, and Lionsgate are said to have all expressed an interest. The litmus test will be December when Avengers: Doomsday drops. If Infinity Vision is a factor in some runaway box office success, then expect interest to tick upwards.