Unchained Key

Found on the Japanese Square Enix Blog as well as on the 1.5 HD Remix Site, the tentative "Kingdom Hearts for PC Browsers" title has now been renamed as KINGDOM HEARTS χ [chi]
Kingdom Hearts x [chi] (Or Kingdom Hearts Key as it is pronounced) has been given a new logo as seen above. Famitsu.com has also updated with an article depicting the information and giving High Quality renders of the Logo and 2 Pre-bonus cards of Sora and Riku that can be seen below. These Pre-order cards contain exclusive codes for the PC game and can only be gained by Pre-rdering the HD 1.5 ReMix from the E-Store.