At first I thought the condition track would be a part of 4e, but with the recent previews I'm changing my mind. It looks like the bloodied condition is there, and then some of the old conditions we are used to.
I like the SW condition track, but I'm not married to it. SW and DND are NOT the same thing, and sometimes certain mechanics work for one and not the other. The thing to remember about SW is that it is LOW LOW magic compared to standard dnd. The force doesn't hold a candle to a high level wizard.
If you strip all conditions out and make a condition track, that greatly limits the number of spells you can produce. Think of how many dnd spells cause nausea, or fatigue, stunning, etc. In the end you would have 1 spell that just knocked you down the track. That's not a bad way to go, but perhaps its a bit too simplistic for dnd.
The new bloodied condition looks pretty interesting, as it provides a means by which certain abilities become conditional, only working or not working under bloodied status. If they at least simplify the various conditions somewhat, I'll be happy.