Aiming to make further inroads into business telephony, Microsoft said on Tuesday that it is working on an update to its unified communications software. Dubbed Office Communications Server 2007 R2, the release is currently in private testing and is slated to be released in February. The product, which will add group chat and screen-sharing technologies, comes roughly a year after Microsoft introduced the first version of its business telephony product.
Microsoft said that about half of Fortune 500 companies have at least one instance of Office Communications Server installed, but the company wouldn’t give any sales estimates or say how many people are using the software to handle telephony as opposed to simply for corporate instant messaging.
"Where we are at with Office Communications Server, we have incredible acceptance and penetration from an instant messaging standpoint," Microsoft Business Division President Stephen Elop said in an interview. As for telephony, though he said Microsoft is still in the "early adoption" phase. Elop declined to offer publicly any sales or unit targets for the new release, but said the software has exceeded internal forecasts so far. 

source: C|Net News