The teaser image that comes with the invite to Samsung's launch event that will take place on April 10 in Bangkok, Milan, and São Paulo suggests that at least three new Galaxy A handsets with different screen shapes will be the stars of the show. However, there are no technical details to talk about at this stage.
https://www.notebookcheck.net/Samsung-confirms-April-10-event-new-Galaxy-A-handsets-coming-up.414647.0.html