U2's new album - their 13th - is reportedly set to be released in November.

A spokesman for the group recently denied that the band have pushed back the release date of their latest studio album to 2015.

Now The Sun has reported that "the new album will drop before the end of the year, most likely in November" and the insider hinted U2 may join the line-up for this year's iTunes Festival at London's Roundhouse in September.

The source told the paper: "The U2 comeback is very much on for this year. This album has been a real struggle for them to make. It's taken a long time and Bono didn't find it easy. But they're very confident now and are convinced the wait has been worth it."

U2's last album No Line On The Horizon came out in 2009, and the Irish rockers have been working with experimental producer Danger Mouse on their follow-up.

The band formed in 1976 and are all in their early 50s and frontman Bono said in an interview earlier this year he felt they are struggling to stay relevant.

He told BBC Radio1's Zane Lowe: "We're on the verge of irrelevance. You have to make stuff relevant to you and where you're at, make an honest account of what you're going through. If that's relevant to other people, great. But we don't know."