The relaunch-verse is a little complicated for those not in the know (why is Romulus still there? What is the Typhon Pact?)
Romulus is still there because ST09 established that it's not destroyed until 2387, and no novels have yet been written set in that timeframe.
The Typhon Pact is an alliance of states founded in 2381 by the Romulan Star Empire, the Gorn Hegemony, the Breen Confederacy, the Tholian Assembly, the Tzenkethi Coalition, and the Holy Order of the Kinshaya. As of mid-2384, it is in a state of unofficial cold war with the Federation and its allies (the Klingon Empire, the Ferengi Alliance, and the Cardassian Union, all of whom have signed an expanded Khitomer Accords), although some Typhon Pact governments are far more hostile towards the Accords powers than others.