That said, there's been an increasing amount of evidence to suggest that 16GB models remain unavailable simply because Apple's original plans for the fourth-generation iPod nano leading up to last Tuesday's event called for only 4GB and 8GB configurations.
As such, it's likely manufacturing ramp of the 16GB models didn't begin until just recently because Foxconn, Apple's iPod manufacturing partner in the East, was busy pumping out 4GB and 8GB models instead. Though unannounced last Tuesday, those 4GB models mysteriously began cropping up at European retailers earlier this week.
The official response from Apple was on the matter was that it decided to produce a "limited number of 4GB iPod nanos for some international markets." The statement suggests the 4GB models were the afterthought as opposed to the 16GB model, but doesn't explain a motive, why availability of the 4GB models will soon cease, or why they're priced relatively close to the 8GB model.
Separately, AppleInsider has learned that some Apple retail stores actually received marketing material last week for the fourth-generation nanos listing only 4GB and 8GB models, which they were then asked to return. Those materials were said to have priced the players in line with the third-generation nanos -- $149 for a 4GB model and $199 for the 8GB.
This has led some industry watchers to question whether it was Microsoft, for once, who caught its longtime rival to south off-guard and possibly pressed its margins in the process. On Monday September 8th, just one day before Apple chief executive Steve Jobs announced the fourth-generation iPod nano, reports surfaced on Microsoft's plans to introduce an 8GB Zune at $149 and a 16GB Zune at $200 around the same time." Via AppleInsider .