Last month, a Microsoft spokesperson confirmed that CEO Steve Ballmer made a passing remark at an analysts' conference in New York claiming a 2010 launch for the company's upcoming 'Office 14' suite.
We have been informed that there have been updates to Microsoft's 2010 Technical Adoption Program schedule, which now states that the final set launch of 'Office 14' RTM is scheduled for early March 2010.
Before this occurs, however, the company plans to release its first closed and non-public beta this July for internal testing and other typical procedures. This will be followed by a second public beta version of the suite which will be broadly available in November.
For those interested, Neowin has posted a few alpha screenshots of the upcoming suite which can be found here