Apple's next iPhone won't be until late 2016, but should come with a new design.
3G iPhone to Support 42Mbps Evolved HSPA?
HSPA comes in a variety of speeds, however, and AT&T's implementation is said to offer 1.4 Mbps (~175KB/s) download and 800Kbps (100KB/s) upload speeds when complete. A newer version of HSPA called Evolved HSPA, however, promises download speeds of 42 Mbps (~5250KB/s).
Channelnews.com.au claims that the new iPhone will indeed be able to support these network speeds on Australia's Telstra network. According to a senior executive of Telstra:
We know what is coming we have seen the new device and it will be available on our network as soon as it is launched in the USA. By Xmas this phone will be capable of 42mbs which will make it faster than a lot of broadband offerings and the fastest iPhone on any network in the world
Apple is rumored to launch the 3G-capable iPhone on June 9th at the Worldwide Developer Conference.