The indrik events started in October 2018, so they've not been running for a full year yet and we don't know if they'll repeat, or if they will be exactly the same or somehow different.
ZOS have not said anything about it yet. They haven't said the events won't repeat, or that the indrik won't be available again, but they haven't said they will either. Personally I'll be very surprised if they never bring the indriks back. They're popular mounts and it's an effective way of getting players who would otherwise ignore events to join in. But I don't get a say in it.
PC EU player. | PAWS (Positively Against Wrip-off Stuff) - Say No to Crown Crates!
"Remember in this game we call life that no one said it's fair"