Dragon Ball Super lost Hiromi Tsuru (voice actress of Bulma Briefs) during the tournament of power arc. With this being her birthday Toei pays tribute to her through social media. You can see the tweet below and spread the respect
Article:https://comicbook.com/anime/2019/03/31/dragon-ball-super-hiromi-tsuru-tribute-birthday-toei-anime/
As always thank you for reading.