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My Bloody Valentine performs at All Points West. August 1, 2009. Wes Orshoski

In an announcement 21 years in the making, My Bloody Valentine say they're finished with a new album.

On Dec. 21, the group "finished mastering the new album!," per My Bloody Valentine's Facebook page.

The ear-rattling shoegaze band has been legendarily quiet on the release front since 1991's landmark "Loveless," though recent years have seen the group become increasingly productive. After a series of 2008 reunion gigs, the group's continued to play shows, reissuing remastered versions of albums "Loveless," "Isn't Anything" and a collection of EPs in the UK earlier this year.

My Bloody Valentine's 'Loveless' Follow-Up Coming This Year

With a few days left, the new set may yet see release in 2012. As far back as 2007, manager Vinita Joshi told Billboard the group would digitally self-release its next album, along with a probable vinyl release. Frontman Kevin Shields appeared to be on course with that strategy in a more recent NME interview, telling the mag it would be released online by year-end -- with an additional EP to follow.

"I think with this record, people who like us will immediately connect with something. Based on the very, very few people who've heard stuff - some engineers, the band, and that's about it - some people think it's stranger than 'Loveless,'" Shields told the magazine. "I don't. I feel like it really frees us up, and in the bigger picture it's 100% necessary."

My Bloody Valentine has lined up a number of dates for next year, with three UK shows coming in March and a headlining performance set for Tokyo Rocks in May.