I am loving the artwork for 5ed but none of it more than the new Monster art.
I read an article on Wizards from a year or two ago about the progression of the design of the kobold where they looked at the changes over time from the original descriptions through the different editions artwork, minis etc and how they were going back to the some older descriptions and evolving the feel from there to suit the newer edition.
I love how it turned out.
Also absolutely LOVE every monster in the banner image.
The Orc, Gnoll, Ogre, Troll and the Illithid are flat out fantastic.
Interesting to note that only one of the three Owlbear images have that skeletal maw, the others have beaks as they "should".
Edit: It's also interesting that the Drow listing is in the Monsters section, the artwork in the Races banner image. Not meaningful, just interesting.