The one thing the core can do is, once you've got the HDD, play BC games. I wouldn't mind a 40GB PS3 if there was an option to play PS2 games at a later date, even if it meant playing cash for the luxury. In my current financial situation, $400 for PS3 and $50 for BC later is better than $550 for PS3 with BC now.
I couldn't care less about backwards compatibility, seeing as I have 6 PS2's of various types. As long as the 40GB has HDMI and WiFi I'll buy it. I have no need for memory card slots with an HDD-equipped console, and I honestly prefer the "20gb" matte black exterior without all the obnoxious chrome effects. The HDD swaps right out for a laptop drive anyway, right? Not that I expect to really need the space. Is it wrong that I'm considering buying this thing even though there aren't any games on it I want to play yet? Is it just pure Sony marketing goodness? I don't even own a 360 and yet I still might buy this first, lol.
The 40GB version has been announced for Japan in the meantime. Release is on Nov. 11th with a RRP of 39,980円 ($340). The price of the previous models will be lowered to 44,980円 (20GB) and 54,980円 (60GB). The price difference is just about between the one of a new and a used PS2, so I guess that sooner or later models with BC will be discontinued entirely.
Can you really just swap the PS3 HDD out for a third party one? Does it not allow SONY drives only? (like the PS2).
Everything I've heard suggests you are no longer forced to use a Sony drive on PS3. Atleast no articles that mention upgrading your HD say you need any specific model, just a 2.5 laptop style drive.
You can use any 2.5" laptop HDD that is 5400RPM. I think 7200 is compatible, but they generate a lot of heat. As soon as I get the 40GB one this Christmas time, I'm going to put in a 120GB drive (or whatever seems like a good deal). You can also use USB2 external drives to boost the memory.