I hope so. The 3GS can only capture SD video, so I don't think editing SD video would require the beefier A4 processor. But I wouldn't be surprised if Apple decided otherwise. If Apple decide to move on, they move on. Backward compatibility be damned.
It doesn't work on 3GS, I emailed Steve jobs and he responded like this:
Nope, sorry.
Sent from my iPad
On Jun 7, 2010, at 2:23 PM, Simon <***@***.org> wrote:
Dear Mr Jobs,
Whilst i appreciate that you must be very busy right now, I was wondering if you could answer my question. Will the new iMovies app work on the iPhone 3GS?
Thanks
Simon