In case anyone needs new builds of KOReader, nightlies can be found at the following links:
http://vislab.bjmu.edu.cn/apps/koreader/ota/
http://hal9k.ifsc.usp.br/koreader/
I'm currently using build 654 with my new KA1 (with latest firmware) and KSM8. KSM works fairly well minus a few minor issues which I need to report.