Check the progress below. It has been an interesting time since ArtByte has been trying to switch over... In the forum there is discussion of entities purposefully ramping up their mining on Version 2 to prevent segwit. For what purpose? Who knows.
http://www.artbyte.me/segwitcsv-progress-tracker/
There are around 6 pools currently working. Hopefully the official artbyte pool will come back up once segwit is achieved.