Retro Studios updated the official Metroid site today to let visitors know about the upcoming Metroid Prime 4 which is set to release next year on the Nintendo Switch family of systems. It’s not the only game added to the site as there’s also a mention of the Nintendo Switch Online + Expansion Pack version of the excellent Metroid Zero Mission. Now all we need is an announcement for Metroid Prime 2 and Metroid Prime 3 on Nintendo Switch.