I still hope to one day see an attempt to beat the season record in UTB. The map is one of the most famous, and the Walkthrough is very challenging (81 days). Here are some saves. On gamerhome, you can read what and when was taken/killed on each day, so there is something to use as a reference :)
The only problem is finding the same version on which the speedrun was performed.

Although I haven't played this map yet and may be wrong (in which case, please forgive me), after loading both saves, I strongly suspect that this is either a very old version of the map, 9000 times easier than the final one, or a completely reworked version by someone "for themselves" (such "smart guys" exist, in case someone is not aware). You can already see that it has been translated into Chinese. Therefore, for me, a record Walkthrough of an unknown version of the map is not a good indicator (but this is not a criticism of season, just an observation).
By the way, since we're talking about "Unleashing the Bloodthirsty", it's worth mentioning: there are at least 2 versions, the second of which is significantly more difficult, as the author "tightened the screws" and blocked a number of things that helped to complete it with less effort. On the maps4heroes.com website, there is currently only one version, and somewhere in the comments it says exactly what the difference is from the other.
Here is one difference:

rushRunner (Boston), 27-11-2017 12:21
I finished on 6-4-4, the SoD version (Dragonmaster had enchanters etc). Not quite a rush run, but the quickest result I had so far.

Yes, here:

Adam, 03-11-2017 21:48
what is the difference between 1 and 2?

gyorgy writes:
10-11-2017 23:22
I played both - Unleashing the Bloodthirsty II
The first version had the last boss with 6K black and red dragons and some other army, and you could blind/berserk stuff. Now his army is a lot stronger, he has armor of the damned and you can't blind/berserk anything...