Each of the line’s four ships will feature 14 solo oceanview staterooms, which debut onboard Regatta on 25 September, Nautica on 26 September and Insignia and Sirena on 1 October.
Howard Sherman, president and chief executive of Oceania Cruises, said: "One of the greatest factors in Oceania Cruises’ success is that we not only listen to the feedback our guests and travel partners provide, we act on it.
"Our guests and travel partners wanted more options for solo travellers and more diverse tour offerings, and we are delighted to deliver."
Pricing and availability for the new rooms will be available on 11 April, for sailings beginning on or after 25 September.
The line has also revealed two new shore excursion series – Go Green and Beyond Blueprints – to provide travellers with "even more options for discovery, exploration and personal connections".
With more than 150 Go Green tours to choose from, travellers will be able to engage with residents and businesses to learn about how they are working to conserve and sustain their environment.
The tours offer guests the opportunity to take part in a range of experiences, such as visiting a sustainable vineyard in Almeria, learning the aspects of hydroponic farming in the rainforests of St Kitts and eco-conscious art tours in Buenos Aires.