iPod 4th gen case
can an iPod 4th gen fit in a iPhone case or another iPod case?
Apple Event: May 7th at 7 am PT
can an iPod 4th gen fit in a iPhone case or another iPod case?
Nope, the design with the 5th gen was a bit slimmer and the 3rd gen is different as well. Here is a whole bunch additional information that may be of interest to you.
https://en.wikipedia.org/wiki/IPod
iPod 4th gen case