Speculation is growing that Apple won't release the iPhone 5 this summer as expected. In fact, according to a Digitimes report, Apple hasn't even released a production roadmap to component suppliers yet.
Citing "sources at Taiwan-based touch panel makers," Digitimes said part of the reason Apple isn't releasing a next-generation phone is because demand for the iPhone 4 has been consistently strong. Parts shipments have also remained constant, and Apple hasn't given manufacturers a timeframe for when production of the iPhone 4 will wind down.
Apple could release a slightly modified version of the iPhone that isn't a full update, as it did with the iPhone 3GS about two years ago. It's likely that Apple wants to continue riding the momentum of its hugely popular iPhone 4 smartphone, especially as Google's Android platform gains ground. However, the company could skip releasing any kind of phone at all. The rumors, at least, suggest it's highly possible.