Self Plus One is a new enrollment type that will be offered by the Federal Employees Health Benefits (FEHB) Program
From the article: "...Starting next year, all FEHB plans will offer Self Only, Self Plus One, and a Self and Family coverage. Postal employees and annuitants will be able to select Self Plus One coverage during the 2015 Open Season, which will run from Nov. 9 to Dec. 14..."
Article Reference: www.apwu.org