The Take That star made the surprise announcement via Twitter on Tuesday afternoon (17 September), writing: "After 14 long years I'm proud to announce my new solo album out on November 25th! I'm excited for u to hear it!"
Gary didn't reveal any other information, such as a name for the album, a tracklisting or who he has worked with, but did promise fans that they'd learn more soon.
The news went down well with the songwriter's fans, with responses including one Twitter user who said the announcement had made her year.
Another wrote: "You really know how to cheer me up Barlow. Thank you xx"
Gary had hinted at a possible solo album in June, when one fan tweeted: "SO @GaryBarlow any chance of a gig or 2 and maybe a solo Album???? #dontwantmuch." He replied: "Maybe."
After 14 long years I'm proud to announce my new solo album out on November 25th! I'm excited for u to hear it! More info to follow #gbsolo— Gary Barlow (@GaryBarlow) September 17, 2013
Gary released his first solo album, Open Road, in 1997. That was followed by Twelve Months, Eleven Days two years later.
He released an album last year called Sing, featuring the Commonwealth Band, which was designed to commemorate the Queen's Diamond Jubilee.
The star has had eight number one albums with Take That.
Gary can currently be seen on The X Factor on Saturday and Sunday nights on ITV. Will we be seeing him performing any new material on a Sunday night results show later this year? Fingers crossed!
One thing is for sure, with writing credits for thirteen UK number ones under his belt, not to mention a string of prestigious awards and record sales of a whopping 50 million worldwide, it's going to be a must-have album!
Meanwhile, in other Gary news, it was claimed today that he's planning to visit the troops in Afghanistan now that he's finished filming his judges' houses stage of X Factor.
A source told The Express that Gary will film his experience (tentatively scheduled for November) for an ITV documentary to air later this year.
Watch Gary's video for 'Open Road' below: