In this task, you are given a piece of an article. Your task is to generate a short summary of the text. Try to give the summary in just one sentence.

Sony has finally announced that voice recognition will indeed be enabled on the PS4 and will work via the PlayStation Camera.
Voice recognition will be enabled on the PS4 and will work via the PlayStation Camera.

Microsoft Corp's Windows 8.1 is finally available in the market.
Bashar al-Assad said Syria would defend itself against any aggression.

Dartmouth researchers have developed a novel and unique approach to treating Chronic Lymphocytic Leukemia, a form of blood cancer that often requires repeated chemotherapy treatments to which it grows resistant.
DA launched the party's second Ayisafani TV advert.