Regions affected include North America, Latin America, Australia and New Zealand.
Here's how it works: Each WoW Token is good for 30 days of game-time and can be purchased from the in-game shop for $20 (or $25 Australian Dollars),
Alternatively, players can purchase these with in-game currency from the Auction Shop, where the bidding will begin at 30,000 pieces of gold.
From this point on, the Tokens' value in gold will fluctuate based on the in-game market, as players will be able to auction them off for gold.
To prevent folks from scalping Tokens, there will be a 10 Token maximum purchase limit in a 30-day period, though this rule may be adjusted over time.
Blizzard noted that while Tokens will be available to purchase today, it may take some time before they become sellable for gold in the Auction House.
The developer noted that it plans to release WoW Tokens in Europe (along with other regions such as Korea, Taiwan and China) and each region will have its own WoW Token exchange. No release window has been announced for this in Europe yet.