I pushed my current progress on BLE-Shield v2.0.0 firmware and Arduino Library to github.
The files can be downloaded from https://github.com/michaelkroll/BLE-Shield
The notifications are already forwarded to the Arduino Sketch using the library. I'm now working on reading the notification attributes.
The specification of the ANCS is provided by apple under the following link:https://developer.apple.com/library/ios/documentation/CoreBluetooth/Reference/AppleNotificationCenterServiceSpecification/Introduction/Introduction.html
Since the firmware and other code is open sourced, maybe others could help to finalise the firmware and library since I'm off for a two week vacation next week.
Please bare with me that the code might not yet work 100%, but I wanted to share it with you already. Please discuss features in this forum. Reviews of the Arduino Library are welcome as well.