Yes, it is the IS version and I bought it. Was just making sure I should keep it rather than return it and buy the 20-35 if it was a better lens. It is metal, etc, and I was not sure if it was any better or not since it was a lot older/...
Had 20-35, have the 18-55 IS, latter is better, forget about what's metal or not: these things don't break in normal use, or you'd have heard plenty about it.