RIM to join forces with Windows Phone in bid to survive?

 Good bye BlackBerry, hello Windows Phone? 

Research in Motion may have to bite the bullet and admit it's in serious trouble, with executives under pressure to do something radical in a bid to save the company, such as joining forces with Microsoft.

Earlier today we heard that RIM was going to delay its BlackBerry 10 operating system launch until next year, and cut a further 5,000 jobs, as the firm recorded larger than expected losses.

Reuters' sources say the RIM board is under increasing pressure to explorer other drastic options, one of which is ditching BB10 altogether, in favour of Windows Phone 8.