Guild Wars 2

If I were to buy the standard edition of GW2HoT, would it be possible to upgrade to the Deluxe edition like the core game offered in the future?

For whats being offered in the Deluxe edition, I don’t really need or want them, but isn’t a bad bonus. If I can save $25 now, and use gems later to upgrade, I’m totally fine with that.

Would like a Dev or someone with proof to answer, otherwise it won’t matter what you say.

The answers you seek lie within
or, more precisely:

If I purchase the Standard or Deluxe editions of Heart of Thorns will I be able to upgrade to Deluxe or Ultimate later?

You will be able to upgrade to Deluxe in the gem store, but the only way to receive the Ultimate edition is to buy it from buy.guildwars2.com or in-game.

Notice, however, that the Ultimate edition that won’t be available later on is nohing more than a Deluxe with 4000 gems added.

Thanks for that, cleared up what I was looking for.