Conversation so far:
What happened in 2011 with Shinedown?
Work on a fourth studio album began in February 2011, with the band Shinedown spending the first half of the year writing and demoing over 33 songs.
What album was it that Shinedown were working on in February 2011?
The recording process wrapped up about a year later in February 2012, and the album by Shinedown, Amaryllis, was released the next month, on March 27, 2012.

Question: When was Amaryllis released?
Self-contained rewrite: When was the album Amaryllis by Shinedown released?