After Apple announced the dates for its annual Worldwide Developers Conference (WWDC), the focus has shifted to the old hobbyhorse of tech websites - the iPhone 5 release date. And there is apparent consensus that iPhone 5 may not be launched in June as was expected generally.

Gadget market observers have taken cues from Apple's statement in which it made the WWDC announcement. At this year’s conference we are going to unveil the future of iOS and Mac OS,” the statement quoted Philip Schiller, Apple’s senior vice president of Worldwide Product Marketing, as saying. “If you are an iOS or Mac OS X software developer, this is the event that you do not want to miss.”

Tech websites read meaning into Apple's focus on iOS to infer that Apple may not release iPhone 5 in June. The reason is that Apple has designed the WWDC event as a software show, not as a hardware show. The WWDC will be held from June 6 through June 10 at San Francisco’s Moscone West.

The iPhone 5 will not be making an appearance at the event, we’re now hearing, MG Siegler of Techcrunch said. But there could be other reasons too. The iPhone 5 launch may be delayed in order to give Apple enough time to iron out any issues with the iOS 5, which is gradually turning out to be one of the most important iOS since its launch back in 2006, writes ITProPortal.

Apple has been said to be working on a completely re-designed iPhone for debut in summer 2011 with a four-inch display to take on the larger screens found on some of the latest smartphones running Google's Android operating system. The gadget market is abuzz with leaked images, specifications and features of the much-anticipated product.

The next generation iPhone is said to cost less and might feature a new integrated SIM card that would be easily configurable on any supported carrier, 9to5Mac ahd reported earlier. The iPhone 5 may also carry an upgraded A4 processor, already dubbed the A5 chip, in addition to a new Gobi WWAN chip already found in the Verizon iPhone, designed to work on both CDMA and GSM networks, it said.

Other rumored iPhone 5 specifications include a multi-core A5 CPU powered with a dual-core graphics core and the addition of Near Field Communication (NFC) technology.