For the most part they're the same. Glass blast is the new term.
I asked this question a while back and someone (Eddie, Byron, Steve, can't remember who...) said Glass Blast was with new beads while Tour Satin was with used.
I have both. VERY similar. My older DH89 with Tour Satin a slightly darker, more matte and more smooth. My newer Glass Blast putters are slightly brighter, yet have a bit of a courser feel to it.