The Lollipop update for Vibe Z2 Pro is around 1.23GB in size and carries a build number K920_S226_150429_ROW. The Over-The-Air update brings Material design and ART run-time to the device.
The Android L update will be rolled out in Phases. It might take time to reach all devices. You can check for updates by heading over to Settings > About > Check for updates.
Lenovo Vibe Z2 Pro sports a 6 inch Quad HD (2560×1440 pixels) screen which is protected with Corning Gorilla Glass 3 Protection. It is powered by a 2.5 GHz quad core Snapdragon 801 processor with 3 GB of RAM. For Graphics it has Adreno 330 GPU. Vibe Z2 pro comes with a 16 megapixel BSI sensors rear camera with LED flash. For selfies, it comes with a 5 megapixel front camera. It has 32 GB internal Storage which cannot be expanded.
So, if you are a Lenovo Vibe Z2 Pro user in India, you can update your device to Android Lollipop.