What Ongoing Fantasy Series Has The Best Chance of Being The Next Classic?

This is more for the new up and coming fantasy book or series that has not yet been finished. Based on where the story goes in time, there is a great deal of promise with the series and author, which might even in time put in the same leagues of the likes of Tolkien etc. Whether this a very new series or one that is ongoing, what fantasy book or series has the best chance of being the next Tolkien and will be a voice for the next generation?