I didn't noticed that today is his birthday when I opened Minecraft and the splashes always says "Happy Birthday Notch!". For those who are thinking that today is not his birthday is because that I live in the Philippines so it means that there is a day after from America. Again, Happy Birthday Notch!

4 Andesite > Polished Andesite
4 Diorite > Polished Diorite
4 Granite > Polished Granite
4 Stone > Polished Stone

4 Polished Andesite > Andesite Brick
4 Polished Diorite > Diorite Brick
4 Polished Granite > Granite Brick
4 Polished Stone > Stone Brick (This looks like Stone Slabs in a bricked fashion)

3 Andesite Bricks > Andesite Brick Slabs
3 Diorite Bricks > Diorite Brick Slabs
3 Granite Bricks > Granite Brick Slabs
3 Stone Bricks > Stone Brick Slabs

3 Polished Andesite > Polished Andesite Slabs
3 Polished Diorite > Polished Diorite Slabs
3 Polished Granite > Polished Granite Slabs
3 Polished Stone > Polished Stone Slabs (What we have now for Stone Slabs)
These follow the same fashion as Stone Slabs

6 Andesite Bricks > Andesite Brick Stairs
6 Diorite Bricks > Diorite Brick Stairs
6 Granite Bricks > Granite Brick Stairs
6 Stone Bricks > Stone Brick Stairs

Clearing things up:
Anything previously made with Stone Bricks are now made with Andesite Bricks, including variants

Pictures:
Andesite
Diorite
Granite
Stone

I made the Stone Brick textures (well, I shifted the Stone Slab texture), rest are taken from Quark.