The upgrade of the TyTN follows the release of the Touch in May and Ghent said, despite its success, the TyTN II could rival it.
“We’re expecting this to be a massive seller in the UK as it’s an extremely powerful device,” said Ghent.
“The Touch is still very popular and the TyTN II can be just as successful.”
The 3.5G-handset now has Windows Mobile 6.0 and high-speed HSDPA connectivity offering speeds nine times faster than 3G, a 2.8-inch screen and QWERTY keyboard.
Other improvements include a threemegapixel camera and 128MB of on-board memory.
It will be available through HTC, Vodafone, TMobile and Orange later this month, and will retail for £449.