I don't think so. Bought one a few months ago - not flush. Got a free one with recent MBP purchase ... not flush. I know they adjusted the iPhone's jack for the 3G last year, but the iPod Touch jacks I've seen do not look like those. <<shrug>>
Maybe my idea of flush is different than everyone else's? Maybe I'm just confused?
It is flush in the sense that you can use any headphones you like with the iPod touch. People are remembering the recessed jack on the iPhone that severely limited the headphones you could use.
It's a very sculpted design but the jack itself doesn't limit you choice of headphone.