PS4 to get cross-platform party chat with PS Vita, Yoshida confirms | VG247
SONY COMPUTER ENTERTAINMENT TO DELIVER “CROSS PLATFORM FEATURE” TO ENHANCE CROSS PLATFORM PLAY BETWEEN PLAYSTATION®3 AND PLAYSTATION®VITA; SUPPORTING TITLES TO BE RELEASED STARTING LATER THIS SUMMER
Curve Digital: Titan Attacks! Sold Five Times More on PS4 than on PS3; Cross-Buy an "Absolute Savior"