It has come out that there will be a third issue in the Storm arc of IDW comics.
“As Equestria’s catastrophic weather tears apart the kingdom, Princess Zipp and her Mane 6 discover the source of the chaos…and meet a favorite Friendship Is Magic pony?! Princesses Zipp and Pipp must work together to quell the dangers of Cloudsdale as Izzy and Hitch take flight in the Zeppelin, set on protecting their kingdom and their friends. In this climactic end of the Zephyr Heights saga, secrets of the past are revealed, friendships are strengthened, and a new leader finds their way to power! for Pony fans!”
A G4 pony to meet Zipp? Dare we say it’s Rainbow Dash who will meet her successor? Think it will likely be a recording or a statue, but it could mean Zipp could be face to face with the legendary pegasus from G4. So far, the New Mane 6 have not seen what their predecessors looked like, only the small wooden dolls from the ANG movie - and these had probably only been seen by Sunny.
So what Hitch found in Zephyr Heights is a zeppelin that had not been discovered, and which he uses to help his friends and save the kingdom. A zeppelin. Have wondered why the pegasi didn’t have planes, helicopters or even airships so far in G5.
So Cloudsdale and Zephyr Heights might become one common city in the future, and considering that the Storm arc - or the Zephyr Heights saga - ends in November, it’s possible that future G5 will make it canon in 2025. The future Queen Storm will be sure of her legacy, and the New Mane 6 will have moved on towards the top.