The officer servers are completely closed, and there has been no news of any other company interested in buying the game. Some Tabula Rasa fan sites discuss the possibility of "private servers" - unofficial servers that use reverse engineered code to run the game - but it is unknown if such projects will be successful or if NCSoft will take action to shut them down.
Aside from this, Tabula Rasa will simply live on in the memories of its players. It is always a bit sad when an MMO closes its servers, as the people who loved the game and made up the community are left with no alternatives. When the developer of an offline game goes out of business, or announces no further expansions or patches, at least the fans of the game can continue to play the game. When an MMO shuts down, the game is completely gone, and very soon the community as well. Players lose touch with many of their in-game friends forever. This tends to leave these players with a sad, nostalgic feeling for the game world they poured so much of their time, energy, and imagination into.
For the long term health of the industry, a better solution needs to be developed for this phenomenon. Creating something people grow to love, and then taking it away from them completely and forever has an element of cruelty to it that is not good for the MMO market. When television shows are canceled, at least fans can relive their enjoyment through reruns or DVDs. No such option exists for fans of a canceled MMO. As more MMOs fail or simply outlive the ability to remain profitable, more of them will close. The bitterness this creates amongst the customer base will only grow and fester. It would be in the best interests of the MMO industry to figure out a better way to handle MMO closings than to just pull the plug and expect people to sign up for whatever game pops up next.
In the final months of Tabula Rasa's existence, the developers continued to create content and run events. It is truly impressive how hard they worked on continuing to improve the user experience of a doomed game. (For more detail on the overall development cycle of Tabula Rasa, read History, Timeline and Post Mortem of Tabula Rasa). During the final two months, when the game was free for everyone, the community and the game had a festive air to it as people knew they were seizing upon a final moment to enjoy a promising game.
The companies that hire these developers will be fortunate to have found people who deeply care about their work. As a gamer, I cannot wait to see what games these developers create next.