You should be able to claim a blue shard. Examine it to start a quest that will take you to the Thundering Steppes. Once there you will be led to some of the transporters there, after you finish the first quest line there, you can then gain entrance to the bigger zones in TS regarding the Splitpaw Saga.
Never finished it myself, but I know of several people who really liked it. It scales to your level, up to lvl 50.
If nothing has changed naturally over the years.