The group will release their Greatest Hits collection, which will include four new tracks, on November 21 in the UK.
As well as the new material, Westlife have included 14 of their hits including debut single 'Swear It Again', fan favourite 'Flying Without Wings' and charity release 'Uptown Girl'.
The four new songs include their upcoming single 'Lighthouse', which was written by Take That star Gary Barlow.
The remaining three songs are titled 'Beautiful World', 'Wide Open' and 'Last Mile Of The Way'.
The album is the first release for Westlife since they left Simon Cowell's record label Syco earlier this year and joined fellow Sony label RCA.
'Lighthouse' will be available to download on November 13, while the Greatest HIts collection will follow a week later, when it will face chart competition from boyband newcomers One Direction.
> Westlife's new single 'Lighthouse': First listen
> Westlife unveil new single 'Lighthouse' artwork - picture
The tracklisting for Westlife's Greatest Hits is as follows:
1. 'Swear It Again'
2. 'If I Let You Go'
3. 'Flying Without Wings'
4. 'I Have A Dream'
5. 'Against All Odds'
6. 'My Love'
7. 'Uptown Girl'
8. 'Queen Of My Heart'
9. 'World Of Our Own'
11. 'You Raise Me Up'
13. 'What About Now'
16. 'Beautiful World'
17. 'Wide Open'
18. 'Last Mile Of The Way'
Listen to Westlife's new single 'Lighthouse' below: