AT&T Boosts 3G Laptop Connect Speeds → HSDPA

One thing I wasn't clear on. If you have an HSDPA device (say the Tilt, Blackjack II, the other aircards, etc) that are limited to 384K up by spec, will they see any increase in download? HSDPA is 3.6M down / 384K and we typically see 1M down /350K up. It would be nice if we would get a download increase since it should be supportable.