After much speculation over its built and specifications over past few months, South Korean giant Samsung on Wednesday launched its flagship device, Galaxy S8, that has a voice assistant. The device comes in two variants with different screen sizes -- the 5.8-inch Galaxy S8 and 6.2-inch Galaxy S8 Plus - and will be available from April 21. Registrations begin from March 30. The device might be priced from $720. Samsung will release these devices in India in the coming months.