According to Mike Bartlett, director of product strategy Skype, it is the latest example of how the company is continuing to innovate and improve its software to deliver better voice and video calling experience.
"The combination of feedback from tens of thousands of users over the last two years of development has allowed us to create a truly amazing experience that puts the focus on bringing people closer together even they are continents apart," he said.
Dan Neary, vice president and general manager, APAC, Skype said version 4.0 would not be available through resellers but only online.
However, Neary did say that the company plans to open a Skype branded Australia store soon.
The company recently announced that it will integrate its functionality with LotusLive, IBM's new cloud service.
The planned integration, previewed at IBM Lotusphere 2009 in Florida, U.S. will join its collaborative services with Skype Internet communications for enterprises to collaborate in the cloud.
Employees will be able to initiate voice and video calls and may eventually be able to import Skype contact information into IBM cloud services.
"Our relationship with IBM demonstrates how serious Skype is about bringing the benefits of 'anytime, anywhere, any mode' internet communications to the enterprise environment," said Scott Durchslag, chief operating officer, Skype.
"During tough economic times, every business is seeking to cut costs while enhancing competiveness and we look forward to broader, long-term co-operation between IBM and Skype to help businesses of all sizes around the globe save money, save time and stay ahead."
Sean Poulley, vice president of online collaboration, IBM Lotus said the integration will simplify and improve the way businesses interact with their customers and partners.