GameStop has sold through its initial allocation of PlayStation 4 units, leaving 2.3 million remaining on the company's first-to-know list, president Tony Bartel said today during an earnings call.

Unlike reserving a system, which requires a down payment, signing up for the list requires only a name and email address. Still, Bartel said this many people on the list "indicates a continued demand [in PS4] for months to come."

It is not clear when PS4 stock will be replenished or how many units GameStop has sold. GameStop declined to shared this information for "competitive reasons." In all, more than 1 million of the $399 system were sold on launch-day alone on Friday in North America.

A survey of GameStop PowerUp Rewards members found that two-thirds said they would purchase a PS4 or Xbox One in the next 12 months, Bartel said, going on to note that Xbox One demand is also expected to be high this holiday season.

Sony aims to sell 3 million PS4 consoles worldwide by the end of the calendar year. The PS4 goes on sale in Europe on November 29 and will be available in 32 countries in total in time for the holidays.