My work created for Adobe Illustrator CS5 , you will find it in "how to guides" or "sample art" section.
This is one of the best projects of mine last year and I'm absolutely honoured.
New features for AI CS5 is beyond, they are the most impressive features of AI versions ever, this difference is made for creating the vector artwork more carefree and artisticly, to celebrate this I tried to achive watercolor effects with AI CS5 build, I had a great experience and I'm happy of the result. Thanks Adobe!
You can download source file and the process , write ups for "how to guides" very soon [link]