A new range of third-party cases labeled “for iPod nano 4G” were discovered at the IFA consumer electronics show in Berlin, Germany over the weekend. The cases, made by Hama, are considerably taller than they are wide, matching the general dimensions for the iPod nano 4G that we first reported on in July. Interestingly, a similar situation developed last year with the third-generation iPod nano, as Uniea began promoting and selling cases…