Testers are receiving their invites for the next version of Microsoft"s consumer instant-messaging service. It"s still unclear whether this version supplants Windows Messenger, but it is certain that it will provide additional VOIP support. Microsoft is expected to make available to testers this week the first beta version of its Windows Live Messenger instant-messaging service. According to a posting on the MSN Messenger enthusiast site Mess.be, Microsoft will launch the first Windows Live Messenger beta test on Tuesday, December 13.