The Vanguard official site has update with information on the Riftway, a series of portals linking the remote corners of Telon.

A forgotten power has returned to Telon. Ancient riftstones have come to life with their potent magic having been lost since the days of the Cataclysm. Channeling great energies from altars scattered across the world travelers are now able to venture forth via interlinking networks spanning all of Telon... Welcome to the Riftway!

The Riftway is divided into three separate networks; these networks are connected through riftstones located at altars all around the world. Not all altars have active riftstones, however.

In order to use the Riftway you must have a riftway shard in your inventory, these shards can be found on any general goods vendor and are relatively inexpensive.

Once you have purchased a shard you must establish a link between at least two riftstones on the same network. In order to activate a riftstone for future use you must travel to its location and click on it. Once you have at least two riftstones active you may travel between them, each time you travel you lose one riftway shard.

Read about the history of the Riftway and how to use it here.