This is not a complete list - Feel free to add to the list if i missed any 3nodding

This list is Anime the have been rebooted and upcoming Anime reboots
in no particular order

1. Sailor moon Crystal (2014-2016)

2. Hunter X Hunter (2011 – 2014)

3. Full Metal Alchemist : BrotherHood (2009 -2010)

4. Fruits Basket (2019 -2021)

5. Cardcaptor Sakura: Clear Cards (2018 )
(continuation after CCS movie 2 )

6. Digimon Adventure (2020)

7. Shaman King (2021)

8. Inuyasha spin off – Yashahime: Princess Half Demon (2020)

9. HoriMiya (2021)

10. Kino’s Journey The Beautiful World

11. Here Comes Miss Modern (2017)

12. Lupin the III (2015)

13. Fate/ Stay Night: Unlimited Blade Works (2014-2015)

14. Ushio totora (2015)

15. Yatterman Night (2015)

16. D.Gray-Man (2016)

17. Fist of the North Star (1983-1988 ) > Fist of the blue Sky (2001-2010 )

18. FLCL Progressive & Alternative (2018 )

19. Rebuild of Evangelion (2021)

20. Bleach: Final Arc (2021)

Upcoming anime that have a sequal after a long time

1) The Devil is a part-timer Season 2 (Late 2021 -2022)

2) Miss Kobayashi’s Dragon Maid season 2 (July 2021)(summer)

3) Sword Art Online Progressive: Aria of a Starless Night (2021) (Autumn)

4) The Rising of the Shield Hero Season 2 (October 2021)

5) Log Horizon season 3 (ongoing) (2020-2021)