According to the latest Genshin Impact 3.6 leaks, three characters will be getting reruns in the upcoming update. They are Nahida, Nilou, and Ganyu. Baizhu will be the only new 5-star character, but there will also be a new 4-star unit named Kaveh.
The banner order has already been leaked to be:
Kaveh has also been leaked to be in the second phase. Do note that these Event Wishes are not confirmed and are merely claims from somewhat credible leakers.
A few different leakers, such as vississ, Tao, and Team China, have claimed that Nahida and Nilou will be featured in the first half of the banner, while Baizhu and Ganyu will be in the second half.
HoYoverse has yet to confirm these details. However, players will likely find out if this leak is true by the time the livestream takes place. The upcoming Special Program is expected to occur in late March or early April.
Until then, players can assume that Nahida, Nilou, and Ganyu are the characters getting reruns. There haven't been any contradictory leaks at the moment, but some other leakers have stated that nothing has been confirmed as of now.
Since there is no datamine on the upcoming reruns, one can only trust that the leakers are putting out accurate leaks. At the very least, Baizhu is a brand-new 5-star Dendro Catalyst user (based on current Genshin Impact 3.6 leaks), so he'll inevitably have a banner in this update based on the datamines.
Just for reference, here are the last times the rerun characters had a banner prior to Genshin Impact 3.6:
None of these units have had an Event Wish in over four months. Ergo, it wouldn't be unreasonable for them to return in the next Version Update.
Current leaks point to Nahida having her second Story Quest in Genshin Impact 3.6. Typically
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