kju has released the CAA1 project files on the BI Forums.

The CAA1 project is to make BI ArmA addons available in ArmA II. Yet there is more to it!
# What can You do with CAA1?

* Try, test, explore and play. If you like it, tell your friends.
* Explore the ArmA I and Queen's Gambit worlds.
* Build new missions on these amazing worlds.
* Convert your ArmA I missions of the given worlds to ArmA II.
* Try any ArmA I mission or campaign in ArmA II. May or may not be playable.
* Try missions ported to ArmA II by community members.
* Help convert popular ArmA I or Queen's Gambit missions and campaigns to ArmA II.
* Help convert popular OFP missions and campaigns to ArmA II.
* Make use the new units in your ArmA II missions.
* Use CAA1 as a base to convert your ArmA I vehicles/weapons/objects/worlds to ArmA II.
* Try any ArmA I world in ArmA II. May or may not work.

A teasing video of Sahrani in ArmA2 by Balgorg on YouTube :