yes but are they in sd or up contveterted to hd or HD
They are 1080p scans of the original film.
In the 60's shows were done on film (VFX, editing/splicing, and all), so there is no SD version like there is for TNG. Doing editing and VFX on video tape wasn't something generally done until the 80's.
CBS Digital scanned in the archival film copies of the entire original episodes and then added in CG replacements that fit in the time allotted to fill in where the original VFX sequence was.
The original VFX sequences were in terrible shape thanks to having so many generations of film used to composite each scene together, not to mention the inevitable dust and dirt the creeps in when you put layers of film together.