Pre-alpha release 6 is now available at the usual place.
Tile interactions and platforms are working. An updated sample project is included. One tile interaction that's cool that you might miss if I don't mention it: when you touch the orange platforms (the tiles that you can jump up through and land on top of) at the right end of the map, there is a tile interaction that creates a bubble that floats up and disappears.
I included updated DirectX dll files -- not sure if this will improve anybody's ability to run SGDK2 without running an install, but I can hope. I think there were still a couple people having problems with that.
BTW, I did finally change the extension to .SGDK2 instead of .SG2.