Topic: Compatibility break - graphics
You've already seen that 0.6 graphics will change. All tilesets except the grass one will be changed. There will be several new tiles and reworked tiles which will force you to update your custom maps. Here's a summary of the tileset which (do not) need to be retiled for 0.6
compatible:
grass tileset (main tiles, doodads, background)
winter tileset (main tiles)
desert tileset (background)
incompatible:
winter tileset (doodads)
desert (doodads, partly main tiles)
jungle tiles (main tiles, doodads, background)
changes
grass tileset: none
winter tileset: new icy main tiles, scratched walls, main tiles without snow; reworked doodads with more variations, new background mountains
desert: reworked main tiles (cleaner look, additional tiles), new doodads (suprise, suprise), one additional background
jungle tileset: overhauled main tiles with bigger stones and several options to vary the appearance, doodads (a lot of plants, grass, tileable lianas ...).
Besides - I am the gfx guy!