Sony Computer Entertainment America has confirmed in a forum post today, that the servers for White Knight Chronicles 1 will be shut down on June 18th this year.
Similarly, D3Publisher confirmed on their Facebook page that the same thing will be happening for White Knight Chronicles 2:
"We regret to share that the online server for White Knight Chronicles II for PlayStation 3 computer entertainment system on June 18, 2013 in North America will shut down. After this date, you will still be able to play the game offline.
We would like to thank everyone in the White Knight Chronicles II community for their support and hope you enjoyed the game."
The problem here is that both games have a lot of trophies that are linked to the online gameplay. So unless there is some sort of patch to alleviate this problem, it looks like anyone who wants to get into the game now, is out of look.