Hmm... IMO I'm not so sure about that. Shuffle seems out of place in a touch and screen world. "Speaks to you" is a nice feature but it doesn't grab us like screens, cameras and touch. I reckon Apple will consolidate to iPhone 4 - like iPod touch and something surprising in iPod nano, and drop the Shuffle.
The Shuffle was to be the most basic iPod--no screen. Small and simple and easily carried when running, and with the 2nd G easily clipped onto clothing or cap. 3rd G was simpler yet. I think that there's room for the Shufle in the next line up. Possibly keeping the Classic but with a 256GB drive and the iPod Touch going with 32, 64 128GBs, loosing the 8GB.
Like to see the Shuffle go to 6-8GB with longer battery life--if possible.
Shuffle 1st G
Shuffle 2nd G \
Shuffle 3rd G