World of Warcraft: Warlords of Draenor's upcoming 6.2 patch will add a brand new ship-building feature along with tons of other additions.
As detailed on the Battle.net update notes, this next patch will add shipyards, which can only be constructed by characters with a level three Garrison. Once a shipyard is erected you can build your own ships and dispatch them on naval missions.
There will also be a new Tanaan Jungle zone that can only be accessed via sea, so it requires a shipyard.
Tanaan Jungle will also include a new raid called Hellfire Citadel, which will add 13 bosses to the adventure.
Another addition will be the new, ultra-hard difficulty level Mythic for Draenor Dungeons. These are "designed to challenge even the most hardened adventurers with a befitting increase in reward," Blizzard explained. "Mythic difficulty is geared towards players that enjoy tackling difficult content in smaller groups and is designed to provide an alternate progression path."
The 6.2 patch doesn't have a release date yet, though it's in Public Test Realms at the moment. For more information on how to get in on that and see the full list of changes Blizzard has planned, head on over to Battle.net.