“To prepare for episode 63’s debut, viewers will also be able to stream the entire Future Trunks arc (the arc begins at episode 47). Then, starting on October 30, the complete series will roll-out, with 10 episodes released a week at a time.”

Try reading

Saiyan is the English localised version. Saiya-jin is the original Japanese version. Depending how weeb you are(or if you reside in a country that left it as Saiya-jin when translating) either is correct.

They are twins on Fiverr