Every article I've read since April 2011, and every product description for the Galaxy S2, said it has Gorilla Glass.  THAT is what I believe. 

I had an AT&T rep tell me that HSPA+ was faster than LTE, and that the Galaxy S2 (non-Skyrocket) was LTE ready.  So, no, I don't believe everything a rep tells me.  They don't know everything.