You can only use PSP Go if you have access to the internet to download content. It also offers a smaller screen. It also costs a lot more. It's not a direct replacement for the PSP, but a parallel SKU. It may not be a drastically different experience, but it is different enough to be a whole new SKU that exists alongside the other PSP SKU.Different experience?
Right, and would you then replace the XB360 with this new drive-less SKU? Nope! Whereas the PS3+ (I'm not calling it a Slim because it's not a true slim) is a replacement for the current fat model. As soon as people know the Slim is coming out and will be superceeding the Fat, they'll stop buying the Fat. That's the reason to not announce it until the last minute, because they'll abruptly end whatever demand there currently is for Fat and then need to worry about how to get rid of that stock without losing buckets more money on it.The only reason to keep the original PSP is that 100% of the market does not have access to broadband and/or Wifi. You could snatch out the DVD of the 360 and offer a digital download only sku.
Although is PSP Go is anything to go by, PS3+ will launch at an extra $200 premium! Way to expand your userbase, Sony