Yeah,that's the one I saw in youtube.
It is clearly NOT associated with original development by Beeone,but the files list in folder is the one commonly used for cudabiss.
My opinion is this program is not an update from older versions,which could be 1.86 or 2.0,I can't think there was EVER a version that high.
Is easy to know : just make input.txt file using some of the latest search modes added and see if it follows the schedule.
Going by the README of v2.x releases
********************"
The 7th line takes the value 0,1,2,3,4,5,6,7,9,10,11,12,13,14,15,16,17 and 18.
****************************"""
So,latest modes after 15 would not be supported in this version if is not higher than v2.x