The 34-year-old 'What A Girl Wants' hitmaker has registered her comeback single called 'Waves' and also hinted that the follow-up to 2012's 'Lotus' will arrive in 2015, reported Ace Showbiz.
Aguilera is set to reprise her role as a coach in the eighth season of the American television reality show 'The Voice'.
She will join Blake Shelton, Adam Levine and Pharrell Williams as she replaces last season's coach Gwen Stefani.
"New baby. New Music. New season of NBCtheVoice. Bringing FireAndFun to all, can't wait for 2015!," she posted on Twitter about her upcoming projects in 2015.