Group Messaging (Use MMS when sending to multiple recipients)?

Does it work with iphone users too? When you receive a group message from an iphone user, are you part of the thread are do you get a separate message?
Not really. If you receive a group message form iMessage users they come as separate messages and you can not easily reply to everyone.
 
i live chatted on the HTC one website, this is the response:

"Unfortunately, I do not have access to this information however I would have to say if the stock Android Bluetooth stacks only support 1.0, the likelihood is that our device will be the same."

I'm not sure about whether it actually supports 1.3 or higher, but I do know that when I connect via Bluetooth and play music through my car stereo, I get artist/track/album information displayed on my stereo.