Maybe in two years, but there seems to be plans for a movie theater in a retail center near the 620 and 2222 corner which is pretty close to Steiner Ranch called High Pointe Village
Here is this blurb at the Kucera Co Website.
High Pointe Village is a beautifully planned neighborhood life style center with a regional location. Located just southeast of the RR 620 and FM 2222 intersection at Four Points, High Pointe Village will serve the lake communities in far west Austin and the daily commuter traffic between Cedar Park, Round Rock, Lakeway and Bee Caves into Austin via RR 620 and FM 2222.
Here is a pdfabout rent rates(boring) but also on the second page there is a map of what they plan to put in and one of the things is a movie theater along with restaurants, fountains, and an outdoor plaza.
Another linkabout 620 retail in general is here with some more details about High Pointe Village.