Is Adele saying goodbye already?

FOX's Michelle Pollino reports: 

Adele hinted during her current tour "this may be her last." The Grammy winning singer included a signed, handwritten note in the program for a show at Wembley Stadium Wednesday stating, "I don't know if I'll ever tour again."

This is not the first time she has flirted with retirement. In March, the New Zealand Herald reported Adele remarked at the close of her concert there "touring isn't something I'm good at." "I don't know if I will ever tour again. I'm not sure if touring is my bag."

The latest note comes at the end of a 15-month tour throughout Europe, the U.S., Australia and New Zealand. The "Hello" singer will perform three more shows in London.

Michelle Pollino, FOX News.

Follow Michelle Pollino on Twitter: @MichellPollino