Very few clues here.. Grief is written all over Harry's face for sure.. I also think from what is behind him we are finally going to get the skinny on what a starborn is and why Harry seems to be different.. Or at least not like Listen or Drakul.
Shards of crystal, odd rune-work glowing on a boulder behind him.I think that scene is on (maybe even inside) Demonreach... possibly Harry is visiting Thomas?
Possible, though my thoughts when I saw the shards was Arctus Tor.
Also possible, though I didn't see the shards as looking very "ice" like (much more mineral).It's also worth recalling that the artist afaik doesn't always capture a specific "scene" from the book.