Piper Jaffray analysts have lent their weight to continued claims Apple's on course to ship a 3G-enabled iPhone in June.

The analyst firm said recent price cuts on the 8GB model of the device initiated by O2 in the UK and T-Mobile in Germany indicated demand for the iPhone was "light" and suggested carriers to be "draining the channel" to make way for the new device.

The analysts predicted the next-generation of the iPhone will cost between $349 and $399. They also pointed out that stocks of the iPhone in the US have been low for the last two weeks, with most Apple retail stores offering only limited quantities of both the 8GB and 16GB models.