KIC8462852
Tabby's Star - KIC 8462852 - remains one of the more interesting and mysterious objects in the sky.
There is a good update at "Updates on Boyajian’s Star" - Astrowright's blog and "Bradley Schaefer: Further Thoughts on the Dimming of KIC 8462852" at Centauri Dreams has the latest on the controversy over whether the star has undergone long term fading.
Update: "The Most Mysterious Star in the Galaxy" - another guest blog by Schaefer providing a good overview of the issues.
Ultimately to resolve this more data is needed.
There is a Kickstarter Project - "The most mysterious star in the Galaxy…