It appears that Sigur Ros has a busy time ahead according to NME.com. A book documenting their free concert series across their native Iceland will be released on June 1st. In a Frozen Sea, will contain photographs taken of that cross country trek that found them performing in places urban and rural as well as large and very small venues. A limited edition of the book will contain several of the bands full albums on 12" records, including Smaskifa, which has been re-released for the first time for this project.
It is also indicated that there will an EP released near the end of this Summer with a full acoustic album to be released in the Fall.