FOSS gamedev and creative worlds

I told Sphax that Minetest is going to be supporting bump mapping and he was wanting to know if it is normal maps or bump maps that it is supporting. I have heard it both ways. The Github commit says that it is bump mapping but the files that I have seen as examples are normal maps.

He also wanted to know if Minetest is supporting specular maps. I saw a specular map texture in the BDCraft example that RBA did but I'm pretty sure it isn't supported yet.

To make it clear: Minetest supports Normal maps