Apple Insider posted a story that Apple's fifth-generation iPhone will feature support for fast HSPA+ 21Mbps network speeds, sometimes advertised as "4G," carrier China Unicom has revealed.

The carrier revealed the information in a presentation given at this week's Macworld Asia. A slide shown by the carrier, spotted by Macotakara, displays the evolution of the iPhone, from the first-generation model in 2007 onward.

Included in the slide is a blank spot for Apple's so-called "iPhone 5," which the company will officially unveil at an event next Tuesday. No photo or details on the iPhone 5 are provided, except for a mention that it will access HSPA+ networks, which have theoretical maximum download speeds of 21Mbps.

  Chinese carrier says Apple's iPhone 5 will support 4G-like HSPA+