Tor has posted a tribute to Darrell K. Sweet, along with all of his book covers for The Wheel of Time, including his concept sketch for AMOL that was done before he passed away. This was not the final version of the cover and Michael Whalen may use this concept or may start from scratch completely. The concept cover may contain spoilers as well...
You can read about it here: A Darrell K. Sweet Wheel of Time Tribute, Including A Memory of Light Sketch
If you want to just view the cover image:
- Spoiler: show