Reading that article made me think of something: Since the PSP will use optical disks, it will be a lot like a CD Player...and what are portable CD players known for? Skipping. This means that the PSP will either have even WORSE loading times and BAD streaming sound/music, or will use up EXTRA battery power to stop that from happening. Ouch.
EDIT: Okay, to those of you with those GBA compatibility thoughts. Look at it on the TECHNICAL side. For one, any games using the MAIN screen(ARM9) would NOT AT ALL be playable on a GBA. The GBA uses a processor comparible to the ARM7. So, if ANYTHING, the only part of a DS game taht could be played on the GBA would be the sub-screen, aka the screen "that displays the menu." THIS one point also brings up an interesting point, however. The second screen uses a processor very similar to the GBA. This processor could, in fact, actually be an exact duplicate of the GBA's, allowing back-compatibility. In fact, nowhere does it say that each processor is for a DIFFERENT screen(I don't believe so, anyway). This could mean that the second processor is SOLELY intended for GBA emulation. I doubt this, but at the same time I want it. After-all, if each screen uses a seperate processor, it would be hard to make games that use both screens as one. For reference, I'll just compare the two screens to being able to use 3D and 2D. The main screen uses 3D and the sub-screen uses 2D. The only games using both screens at once would have to be very GBA-like...But that wouldn't matter for, say, TRUE SNES ports(the current ones, remember, are modified because the screen is too small). This is why I truly hope that the ARM9 has the ability to process for both screens.
Upon finishing this post, I realize how much having technical knowledge can be both a help and a hinderance, destroying dreams...
But I am VERY glad to hear about those cartridge specs. That means we may be seeing N64 ports on the DS. Even if it's supposed to be a 2D console, that won't stop some companies from creating 3D chips(like Capcom did for the SNES). I doubt it will be solely 2D, though. That kind of space and power is TRULY overkill on a 2D system.