Unfortunately, that's not due out until sometime in August.probably more than most of us wanna pay, but Shure's apparently coming out with a $40 adapter that you can plug existing headphones into. The members over at Head-Fi.org--true audiophiles--are really miffed about having $200 in-ear headphones that don't fit into the weird jack.
Couldn't find it on the Shure website, though.
They'll probably come out with a dedicated headphone as well with capability to answer calls, volume adjuster, etc.
I too went the L-Adapter route from Radio Shack, although mine cost $3.99. I feel ripped off! On top of that, the one I bought had damaged packaging. Anyways, it works great with my Shure e2s and is much cleaner than the Belkin, Griffin, or even Shure MPA adapters I've seen. Here, look for yourself. I do need to clean up the cuts though, kinda messy.I just bought an L-Adapter at Radio Shack for $2.99 and trimmed a little of the plastic off. It looks perfect, and the L style is really nice, in my opinion much better than the Belkin, or a short cabled adapter.
I got mine from My Tech Deals for $10.95 no tax. I Love my iPhone