V40 has been released for HTS3531, but only for /55, /78, and /93 models.

http://www.supportforum.philips.com/en/showthread.php?7478-HTS3531-Latest-Firmware-upgrade-(V40)-has-been-released&p=39744

Please also release for /12 !!!

Will ARC passthrough Dolby digital/DTS or just stereo/multichannel ?