In-game mail with a free character customization option.

[Riviere]

So, (sorry Maelric, this isn't an answer for you but a question on some of the comments that have already been posted here) question for anyone who knows - is getting a bottle of fantasia a perk of being a subscriber? Do you get to change your appearance every month, or is it a first-month only thing?

It's the 30 day reward. They've said there will be more veteran ranks in the future (Right now there's only 30, 60 and 90) so probably in another one of them we'll get another phial.

Hmmmz... Will I get this potion if I chose to upgrade to the digital deluxe edition?

No.