BlackBerry will only be releasing just one handset running the shiny new BB 10 operating system, having scrapped two other phones, if rumours are to be believed.

Previously, it was thought that BlackBerry manufacturer Research in Motion (RIM) had three new 'superphones' in the pipeline which would run on the BlackBerry 10 operating system - due out later this year - but now two have been cancelled.

RIM is believed to have halted development on the Milan and Colt, while the London is still being produced and is thought to still look like the leaked image (above) The Verge published back in October 2011.

TechRadar believes that the London will be unveiled at BlackBerry DevCon Europe, a convention taking place in Amsterdam on February 7 and 8. Failing that, the London could be seen at Mobile World Congress in Barcelona later that month.

BlackBerry is set to reveal the new 2.0 operating system for its PlayBook tablet at CES, which kicks off in Las Vegas on January 10, but it's unlikely that we'll see BlackBerry 10 or the London as soon as that.

RIM has promoted BlackBerry 10 for some time - it was previously called BBX, before a company who already owns the name threatened legal action - so it seems like a risk to develop and release just one phone capable of running the new software.

Presumably, the London will be a 'superphone' and appear at the very top of the BlackBerry range, with more BB 10 phones coming in the coming months, but for now this is mere speculation.