If the update was released, you'll know it on their facebook page and on the home page. On their website, we can also read : "The AVIC-F960BT will be one of the first aftermarket radios to feature Apple CarPlay (firmware update required). blabla ...".
The last update is :
Download link Version Date History Size AVIC-Fx60_EU5_FW_Ver_1040400.zip 1.040400 11-09-2014 Update history file 438,5 MB