Is the Qualcomm AR SDK integrated and available for Unity Android?
No, Qualcomm internally uses Unity for their AR SDK, but it is a separate product. Feel free to experiment with it and share results =)
Good to know 
Looks like an SDK is out, but no sign of Unity support. What’s the word on this?
Perhaps there will be some news on Unite? 
Like.
Aside of the realization that it will be darn cold
The Qualcomm AR Unity extension is out! It is now available on the Unity Asset Store, or on our online portal (with additional samples): http://ar.qualcomm.com
Enjoy!
- Kim
Does this only work for Android or is it also iOS compatible?
Its Android only (uses java)
As its a Qualcomm AR thingy, it might at worst not even work on the Galaxy S as that does not use a Qualcomm CPU, don’t have a galaxy s to comment on that
Does anyone run it on NexusOne with Android 2.2 ?
When I try, the application seemed to run but I just get blinking screen.
It doesn’t with for me either on nexus one with froyo (either blinking colors on screen or full crash.) Always crashes on Samsung Vibrant but I expect that until 2.2 is released (known unity issue).
Tried tweaking all settings such as “optimize for speed” on the ARCamera but nothing helped. Tried with their sample trackables as well as my own and neither helped - still either blinking or crashing or both but no camera image either way.
Will try it from windows and see if that makes any difference.
Does anyone run it on NexusOne with Android 2.2 ?
Yes. I’ve run it successfully.
Have you confirmed whether your QCAR build environment is set-up correctly? For instance, can you run the QCAR samples using Eclipse or another IDE?
when i run my project on my google nexus 1 the screen flickers and the video is screwed up. What can I do to make it work correcty?
It is because my target image is not a good one?
i changed setting on the camera to speed instead of quality and now is it running very good. 
Does anyone know if this will run on the Hummingbird processor, or is it snapdragon only right now? Planning on picking up a Nexus S tomorrow, and just want to make sure it will work.
It’ll probably work in the future, but I don’t know if it already does now.
Beta 2 of the Qualcomm AR Unity extension is now available. This update fixes a number of bugs and adds support for MultiImage targets and Virtual Buttons. We’re in the process of submitting the update to the Unity Asset Store, but in the meanwhile you can download the beta with samples from our website: http://ar.qualcomm.com
A running list of Supported Devices is also available on the home page there. We will be adding additional devices throughout the beta, so keep an eye on that.
Finally, if you have any questions about the QCAR extension please come ask them in our forums: http://ar.qualcomm.com/qdevnet/forums
Thanks, and enjoy!
- Kim
I did a quick test following the Getting Started section for Unity 3. The Galaxy S didn’t load my test applicaton using Froyo. The load screen blinks a couple of times and then exits.
I guess it can also be said that under SDK LINKS → Supported Devices there aren’t any samsung devices named for Beta 2. Someone says they got it to work but it’s a bit of a hack. I posted the table below as a screen shot since previous posts of this probably didn’t look right…
If you have upgraded your Unity editor to 3.2 you will need to apply a patch to each of your QCAR applications to get them to run. The patch can be found on this site, look for QCAR-Unity-3-2-Patch.zip in the Unity section: http://ar.qualcomm.com
Unzip this file and import QCAR-Unity-3-2-Patch.unitypackage into each of your existing QCAR Unity projects. Documentation is included in the zip.