"Then the convergence of iOs and Mac OS is something they mooted a while back and rumour of iOs apps running on Mac OS has re-surfaced again recently. "
I've heard on the grapevine, MacOS is going to become a more mobile forcused OS, and there may be a new Corporate OS in the works for macPro's and iMacs etc to get around the managability problems of macs in the enterprise space.