The only reason I wasn't hoping for that is because I intend to stuff a 512 GB aftermarket SSD into my next MBP and I'd rather not pay through the nose for Apple's upgrade option.
They are only charging $1100-$1200 for the upgrade. Where are you getting a high-quality aftermarket 512GB SSD for much less than that (forget that you have to install it yourself)?
Especially if you get a list price discount (negotiated for small business, big employer, association, government, military) the apple upgrade price is below market price, at least for the 512.