Apple always sells the latest model, until a new one comes out, then the old model disappears in favor of the new one. Old models can be purchased as refurbs from the Apple store, but the 'new' model is always the latest one. I assume Apple goes bu then the model was released, not when they stopped selling it, so a 2006 model is 6 years old this year.
I'm replying to this and all of the following discussions.
I am aware that Apple has always sold the latest model right up until the new model is released. Can't remember if they did it this way back in the Performa/LC days, but certainly since Steve Jobs came back. (rare exceptions do exist ... e.g. silent upgrades, etc).
My point is that, if indeed, the MacPro 1,1 is not supported by Mountain Lion, then there are folks that own a 4.5 year old Mac that won't be able to get the latest OS. Sure, the range of ages on that particular Mac can be between 4.5 to 6 years old.
I can see where Apple is coming from. They drop support for older machines in order to keep the platform innovating. I get it. But it still stings when you have a perfectly capable machine that isn't able to upgrade to the latest OS. I have a CoreDuo Macbook. It's been maxed out to its capabilities in RAM and hard drive space. But I'm stuck on Snow Leopard ... which wouldn't be so bad, but Apple tends to drop support for their 1st party apps right along with the OS. It stings.
Anyways, 4.5 years is still a good run for a computer.