The presence of 512MB of RAM wouldn't surprise me all that much. After all, the design for the A4 doesn't actually utilize any chip designs that AREN'T entire off-the-shelf; the entire "A4" design Apple came up with is entirely in packaging; it uses an ordinary ARM Cortex A8, PowerVR SGX 535 GPU, and on the upper layers, a pair of ordinary DDR chips.
Giving the iPhone 4 twice as much RAM simply requires replacing those 128MB (1-gigabit) chips with 256MB (2-gigabit) chips instead. If Apple actually thought that they wanted a powerful enough phone, theres nothing stopping them from using 512MB (4-gigabit) chips to make it a phone with 1GB of RAM, as I believe those are currently the largest mobile DDR chips available.
[citation][nom]lo_vaquero[/nom]They have supposedly sold 2 million iPads. That's $1 billion minimum that they've managed to part from various fools of varying colors, fruits and adorations...[/citation]
...Except that $1 billion is merely the sale price. Cut out the price of manufcature from there, first. (which, admitedly, isn't all that huge, knowing just how high Apple's markup is compared to other electronics makers) However, then there's also the rediculous amount of money Apple has spent on advertising, as well as the somewhat-less-rediculous amount of money they spent on developing the thing. Once it's all said and done, have they actually made a profit on their little toy, or have they just moved a LOT of money and actually cost themselves doing it?
My bet is that Apple won't be marching much past that 2-million mark before the whole "shiny and new toy" feeling wears off of the iPad, and people start ignoring it in favor of the iPhone 4. And even by then, it's likely that Apple will have had a net loss, after pouring probably SEVERAL billion dollars into it. As a result, Steve Jobs et. al will likely start pretending the iPad never existed.