2006 saw many debut fantasy novelists begin their careers, most famously Joe Abercrombie, Daniel Abraham and Scott Lynch. Slightly less well-known is David Keck, whose first fantasy novel, In the Eye of Heaven, was published to moderately good reviews.
He followed that up with In a Time of Treason in 2008, but his third novel has been MIA since then. The good news is that the book, A King in Cobwebs, has been completed, delivered to Tor and returned for edits (now completed). The book is making its way through Tor's publishing machinery and should be out, hopefully, in 2017 or 2018.
The fates of other long-awaited fantasy novels is less clear. Patrick Rothfuss is still working on The Doors of Stone (curiously, since an apparently-completed manuscript was circulating with beta readers over two years ago), George R.R. Martin is still working on The Winds of Winter and J.V. Jones remains completely MIA. However, Ken Scholes has delivered Hymn, the long-awaited final novel in The Psalms of Isaak, and that will be released in December 2017.