Upload & Sell: Off
Well, it's slightly lighter than the 24-105, 9 blades vs 8, and 0.7x instead of 0.23x magnification.
Also, it's got hybrid IS, not normal IS like the 24-105, which should make it a bit more useful for macro-ish shots.
Essentially, it's a "different" kit lens than the 24-105, and I wouldn't be surprised to see it bundled soon with some cameras.
Undoubtedly the price will drop somewhat, but with the 24-70 II being 2k+, it makes a $1500 "standard FF zoom" look like a bargain.