Dear Hifumi,
Thanks for asking this question. Currently there is no CA PLEX announcement available for Windows 10 Support. I expect it will be ready soonest,but CA PLEX 7.0 is
End of Service beginning January 15, 2016. Please see support.ca.com/phpdocs/7/258/258-7_0-eos-announcement.pdf
The current version is CA Plex 7.2,please see support.ca.com/phpdocs/7/258/258_72_GAAnnouncement.pdf
Regards,
Thomas