In an attempt to reign in expenses and slow the bloat, Sony has completely restructured its business. Part of that move involves selling its VIAO PC brand, and its e-reader business. Another part involves restructuring the Bravia TV side of Sony's business.
Sony's PC business was sold to JIP (Japan Industrial Partners) while its e-reader business was sold to Kobo.
Interestingly, the word Sony is using to describe its restructure of the Bravia business is "rationalizing". It essentially amounts to attempts to streamline the business from streamlining the production side of things, to reducing costs in research and development.
Strangely enough, the PlayStation brand is not mentioned at all in Sony's report. The PlayStation brand is gaining strength as a result of strong global PlayStation sales, and Sony most likely don't want that brand tarnished in all the restructure cost.
All in all, it seems like a smart move from Sony, get rid of the businesses that don't work, consolidate the ones that hopefully will work in the future, and don't touch the businesses that are currently on a roll.