First change will be boost changed to all characters on account, and all races. That’s likely to come in a few months.
Second change most likely boost extended to level 70.
WoW tokens will make an appearance, probably around December, or around that general Christmas period.
Very likely there will also be some kind of ‘Attunement Passport’ too, where players can buy their way past TBCs lengthy attunements.
Going forward over the long term, it’s only a matter of time until buyable gear, items and rep are made available in retail. We can probably expect to see epic gear, raid consumables, trade mats, honour and reputation tokens being made available in the cash shop by the time the next expansion rolls around.
So, I’m guessing that WotLK Classic may tentatively begin to introduce the same stuff. Expect to see a great big BLIZZARD SHOP icon somewhere on the WotLK interface, that cannot be removed through mods, selling epic loot, raid consumables, trade mats, honour tokens, rep tokens, buyable gold, instant L80 boosts, mounts, pets, cosmetics, and in-game services.
What’s more the ‘community’ will absolutely applaud these cash shop services, praising them to the skies, and attacking anyone who disagrees. They’ll be so quick and eager to open their wallets that their credit cards will be a blur.