The new Burgundy Red colour for the Samsung Galaxy S8 was launched in South Korea. Though we are not certain whether this colour will be available in other countries or not. A while ago Samsung had released the Galaxy S8 and S8 plus in Pink which was available only in Taiwan. So there are probable chances that this Burgundy colour could be exclusive only for South Korea.
There are no changes in the device apart from its colour, the front is still back. The device has 4 GB RAM and 64 GB storage, it is powered by an Exynos 8895 processor and 3,000 mAh battery backup. You will have to wait to see whether this colour comes in your country or not.