There is the explanation why Gabrielle didn't die in a fire chasm at the end of third season. And there is an adjustment about sexes among Xena/Gabrielle/Joxer's reincarnations.
Did You Know?
Final appearance of Ted Raimi as Joxer. See more
In one of the flashbacks scenes set in season 4 timeline Xena is wearing the new chakram that she gets in season 5. See more
Just out of curiosity... What would have happened here today if I'd really been asking for your hand in marriage, no strings attached?
[after kissing Ares
Guess you'll never know.