It seems like it was only yesterday when it started, and now it's almost at an end. According to Wryxian of the World of Warcraft forums in Europe, Season four of the Arena will end in less than two weeks, on October 14.
Once Season 4 ends, teams and ratings will carry over so that players still get to earn points and purchase gear until Wrath of the Lich King launches on November 13. Also, note that October 14 is only a tentative date, as Wryxian explains:
We re currently planning to end the fourth Arena season on October 14, 2008, and as always -- this date could easily change.
This Arena Season is only ending in respect to the ladder, meaning we'll be taking a snapshot of the season's ladder and then go through our normal process to determine who is eligible for the end-of-season rewards. This process should take approximately one week.
It's very important for players who feel that they may be eligible for the arena-specific title and/or Armored Nether Drake to refrain from transferring their character to another realm between the date outlined above, and when the end-of-season rewards are physically awarded.
- World of Warcraft, Arena's Season 4: you'll see it coming
- World of Warcraft forums: Arena Season 4 arrives in two weeks