It is inconceivable to me that we will see a new revival in the next decade. The last major one lost its investment (one of the reasons cited was that it was too soon after the original). Anyone who needed their fix got one two years ago in the well-reviewed off-Broadway production. Any new attempt would result in financial failure. Except for a small group of people on this board (and similar ones not on the board), most people are not going to see Into the Woods multiple times).
I have to admit that I am always amused when this topic comes up. As a composer / lyricist, Into the Wood may be Sondheim's second biggest hit, after the wildly different Forum; however, it still only ran for around 700 - 750 performances (not a bad run), and struggled at the box office for a sizable portion of that run. As we all know, despite being incredible, he has never been super commercial. I remember years ago, right after ALNM opened at the Shubert, the producers moved it to the much larger Majestic to take advantage of the spectacular reviews, which was a huge mistake; in addition to getting lost in the Majestic, it turned out that the lion's share of the typical Broadway audience for musicals did not actually like ALNM (too sophisticated for them, no dancing).
Leading to my conclusion that a revival of Into the Woods, no matter how well received, would be a financial disaster, unless of course, Meryl Streep decided to reprise her role from the movie, and Emily Blunt and James Corden and Chris Pine, but it would close three weeks after their replacements came in.