Stefan Mileschin

Microsoft has no plans to release a new service pack (SP) for Windows 7. Sources at Microsoft's engineering team told The Register that breaking precedent (of releasing a new SP every 2 or so years), Microsoft will not release SP2 (service pack 2) for the operating system. Apart from being a collection of important software updates over a period, a service pack allows Microsoft to introduce major updates to key components of the operating system, such as its kernel. Apparently, Microsoft's Windows team is too busy with Windows 8, and it is observed that by choosing to not release an SP, Microsoft could be pushing users to its newer OS. Instead of newer SPs for Windows 7, Microsoft will release timely updates for Windows 7 SP1 over Windows Update, till the operating system's support lifetime runs out (that's January 2020).

http://www.techpowerup.com/174384/No...-7-Report.html