According to the site, this first beta test will include 1000 people and will be limited to the region. Interested participants were required to complete a questionare, and those selected received a code via e-mail. Players who received codes had 48 hours to activate them.
A post on the Monster Hunter Online forums indicates that the 1000 players have been chosen, and beta testing will begin shortly.
Monster Hunter Online, an MMO version of Capcom's action-adventure series, was announced in April and is built on CryEngine 3. According to a press release sent out after the announcement, the game is being developed "for the international market." There is still no information on a release plans outside of China.