The firmware update Z130HDDU0BOC7 TIZEN version 188.8.131.52 was launched Over the Air (OTA) last week in India. There were reports that the launch was also in Bangladesh, but it seems that was not true at that time, but the update has gone LIVE NOW !!!!.
The update measure in at 26.9Mb and there is no change log at the moment, so this is most likely a bug fix / performance update.
If you do not get a automatically prompted to update your firmware, you can manually check by using the steps below:
Tizen is an Open Source Project, and therefore gives access to companies like Samsung to the Source Code which enables them to provide its customers with fast firmware updates to address bug fixes and boost performance. This is unmatched by any other operating system which involves multi-device manufacturers. Keep following #TeamTizen for all the news on Tizen, and the Samsung Z1.