Some Garena players were very confused about our client having a Singapore server to select and were ending up on the wrong server. As you know, you can put "Singapore" in the box and it will work fine. While we want to encourage new players to play on the appropriate server, we don't plan to shut down the GGG server located in Singapore because it's faster for some Western Australian/Japanese users and also very useful for the Singaporean players who want to stay on the server they've already paid money on.
http://www.pathofexile.com/forum/view-thread/637200/page/11