Since the time you have originally posted, we have released a new client version.
You'll have to download that to be able to connect to the game. Since the updater mirrors aren't set up yet, to the best of my knowledge, the only way to get the new client is to download the entire install package. Once you have that, you can completely remove the old install, making sure all files and folders are removed, and install with the new package.
After install, do NOT run the updater, as it isn't set up yet and could break your install. Instead, just run the PSClient.exe program and connect to the server.
Or, you can wait until the mirrors are set up and use that to upgrade to the new client. Normally it takes a few weeks before the mirrors are set up to do this.