Skype has made a strategic hire to head the unit called Skype for Business. What makes the hire strategic is the person's background with Reuters, Microsoft and VocalTec.
Given the experience David Gurle has, and the moves Skype is making, I would say that SIP, video and the business markets are their core objectives for the next two years.
You also have to expect that Screensharing and Screencasting, will increase in importance in the business market for them. I say that because, as a reader recently pointed out, Skype was just awarded a patent in that sector. Many may have missed it, as it lists eBay as the assignee, but my source tells me it belongs to Skype. It was also reported here.