You may have to preorder Galaxy S9 early to get it before a March 16 launch
Previously, Korean sources tipped that the S9 will allegedly have "a reservation sale with Samsung Electronics for 7 days from March 2-8," according to carrier sources, which is shortly after the February 25 unveiling at the MWC expo indeed. Today, however, the publications say that the global rollout of the S9 and S9+ will start on March 16 in earnest, while "those who preorder the Galaxy smartphones can get their hands on the devices between March 9 to 15," or about a week earlier than the official launch.
According to one unnamed Samsung official: "The Galaxy S9 series is more focused on user convenience than the new design. The detailed sales schedule and price will be released after the unpacking event." Thus, we will have to wait for Sunday to hear on the official Galaxy S9 release date in the US, but it seems that, while preorders will hit the tape immediately with possible trade-in incentives, the actual launch may stretch into mid-March.
source: Korea Herald