Here’s the first release candidate of the U3.5 tile set. It’s closest to the EGA U4 set, but with some U3 (healing station, thief, cleric and serpent), U4 Upgrade Patch (demon, devil and text) and U5 (walls, floors, doors and ladders) influences. The tiles have 8×1 attributes (only two colors per 8×1 pixel block).
[Edit] For some reason this has the wrong version of the priest. It should feature an ankh, not a cross.