Sony chairman and former CEO Howard Stringer, who has been at the company since 1997, will be leaving the company in June.
Sony will sell off its holdings in mobile game firm DeNA for about US$440 million, the latest in a string of deals that could boost its bid for a profitable year.
The cross-device games company will now be native to Xperia handsets. Its games app is alread available on Windows PCs and Android devices, including the Kindle Fire.
Sony's Xperia Tablet Z will go on sale globally in the second quarter, priced from $499 in the U.S.
In a lengthy presentation, Sony executives announced the PlayStation 4 and brought up several partners to demo games for the new console.
Sony on Wednesday is holding a PlayStation event in New York City where the company is expected to introduce its next gaming console dubbed the PlayStation 4.