Hopefully this is will help everyone in the same shoes.
I have Sedan E90 2008 and a week prior to my warranty expired as others suggested in this thread, I took it to the dealership and they fixed it without any questions.
So far the car is running well without any ticking. Knock on wood!
All I did was showing the video to my SA that I took with my iPhone that shows the ticking noise, a reference to this thread on the email and also the TSB number.
I'm not sure if they replaced the lifters or the head or both. I can go back check the receipt and update you guys if someone needs it.
Lastly, I want to say thank you for everyone that's contributing to this thread.
It was very helpful to get it fixed (in my case).