It is, but it's packed into the $499 160 gb PS3 bundle that's coming out soon and I already have the PS3, so I have no need for another one(let alone one that costs $100 more than mine did for 120 more gigs than I got with a pack-in game). This is especially true, since I can get a bigger HDD and install it myself in my own system for cheap.
I know, that doesn't make sense, but I cringed and had a tough time letting go of the $320 I shelled out in cash for my own PS3, so $500 for a system(even with a game, a DS 3 included and a bigger HDD) would be impossible for me to fathom.