This Dandy Gadget: Despite the fact that iPhone Nano was not announced at MacWorld 2009, new rumors claim that the iPhone nano does appear in sales this year. But some rumors said it will be available first in Chinese market.
The Taiwan Semiconductor Manufacturing Company (TSMC) and United Microelectronics Corporation (UMC) who have received an order in chips production for the iPhone nano from Apple, will be completed in March this year. It could be!! iPhone nano will fall for sale in June and October.
Furthermore, iPhone Nano as a cheap version of iPhone will not have Wi-Fi module and support for third-generation networks, as well as possible consistent with the plans of Apple to enter the Chinese market. [Dandy Gadget Source]