I sent in my first gen iPod nano I purchased on launch day because of the battery defect issue. Apparently due to supply constraints, we are getting upgraded to the current gen with twice as much storage!
Dear Apple Customer:
Thank you for participating in the iPod nano (1st generation) Replacement Program. Please find your replacement iPod enclosed.
Serial Number
Please note that your replacement iPod has a serial number different to that of your original iPod nano. In some case due to limited availability of replacement stock of iPod nano (1st generation) Apple may have replaced your iPod with a more recent iPod model of equivalent or better specification. Always retain a record of your serial number(s) for future reference.Warranty
Your replacement iPod product is warranted to be free from defects for 90 days from the date of service.To ensure that your iPod software is up to date, download the latest iTunes from Apple’s website at http://www.apple.com/itunes/download. Questions regarding the operation of your iPod can be answered at Apple’s online support site at http://www.apple.com/support/ipod.