iPod touch Is the iPod 4G smallet than 3G?

[Mako5]

I am trying to find the physical differences.

 

[Blackened]

http://www.maclife.com/article/news/fcc_releases_detailed_photos_4th_gen_ipod_touch

 

[tablo13]

..

 

[bindle]

3rd generation: 4.3 in (h), 2.4 in (w), 0.33 in (d)
4th generation: 4.4 in (h), 2.3 in (w), 0.28 in (d)