Samsung will launch several Tizen smartphones at varying prices, the source said without disclosing other specifications.
Samsung aims to build its own ecosystem through Tizen, which powers its smartwatches and premium television sets. But the firm needs more handsets running on the system to expand its user base and attract third-party developers, analysts say.
The company launched its first Tizen smartphone, the Z1, in India in January and has since been selling the device in Sri Lanka and Bangladesh. It has sold 1 million Z1s so far in India, the world's third-biggest smartphone market.
The Z1 was the best-selling smartphone in Bangladesh in January-March, researcher Counterpoint said in a May report. A spokeswoman for the South Korean firm declined to comment.

Currently, only a few devices, including Samsung's smartwatch products run on the Tizen platform. A majority of Samsung's mobile phones are Android-based, which is also the dominant OS on most smartphones across the globe.
Samsung developed Tizen with Huawei Technologies and Intel Corp to challenge the Android software that powers most of the world's mobile devices.
The dual SIM device is powered by a 1.2GHz dual-core processor, 768 MB RAM and 4GB internal memory expandable up to 64GB. It features four-inch display, 3.1 MP rear and a VGA front camera and 1,500 mAh battery.