news is a week behind because at the time Mike Schley made the tweet concerning Greyhawk maps soon to be on his website, it didn't strike me as a great move forward for our favorite setting. Since then I've been to Mike's site and I see he does have an impressive body of work and illustration too. The aforementioned maps from Expedition to the Ruins of Greyhawk are not on here yet, but I do see he has maps from the 4E Against the Giants conversions that once ran in Dungeon and a map of Hochoch seen in Dragon #418 (from that same Giant-troubled region).
I enjoy his isometric city illustrations and anything nautical. It seems he's done work for other fantasy worlds outside D&D. Naturally, most of what you will find for sale printwise is Forgotten Realms material, a lot of which can come in handy if you're seriously running their current 5E adventures. Now for dungeonmasters curious to see what Greyhawk maps Schley might put up next from ETtRoG, I happen to have that book and can critique them:
The Green Dragon Inn is central to the story and it's a decent example of Schley's floor plan work. You won't find this inn illustrated anywhere else in Greyhawk canon that I'm aware of so it's worth a look though it's suitable to use as any generic inn really.
functional game map so I assume if you want a print of the city to hang on your wall instead of on your game table this is the best thing out there.
The top view of the three ruined towers seems like a simple exterior elevation map sure, yet it led me years ago to do this illustration of what the towers looked like before their ruination (or rebuilt as the case may be). Will I order anything from Schley? Probably not, but it gives me hope that maybe in the future other cartographers like Anna Meyer can get the green light to sell Greyhawk maps and with any luck new Greyhawk maps.