Paul Maritz talks up the 'software mainframe' at VMworld in Cannes.
Firm promises better experience for workers accessing virtual desktops.
Istanbul offers more performance at same power draw as quad-cores.
Mandriva Mini optimised for key netbook platforms such as Intel's Atom.
'Computational scaling' will allow future production of 22nm circuits.
New OS enables efficiency savings, but Microsoft declines to simplify licensing.
Update adds new-look user interface alongside application store and online backup service.