No, the next-gen foldables aren't official yet. Samsung is running its usual early bird promo campaign - all you need to do is sign up with your email.
This is a companion discussion topic for the original entry at https://www.gsmarena.com/you_can_now_reserve_a_samsung_galaxy_z_fold6_or_z_flip6_in_the_us_and_get_a_50_credit-news-63427.php