They are
- Eyeball (1975)
- From Beyond (1986)
- The Legend of Fong Sai Yuk Collection (1993)
All in HD and 4k.
Tech specs: Blu-ray.com, which also gives upcoming releases with no set release dates:
- Apartment Wife: Affair in the Afternoon
- Barfly
- Knife Under the Throat
- Mortuary
- Virgin Witch
From Beyond and The Legend of Fong Sai Yuk Collection for me.