There was a huge update on
As we can see the first line, timeupdated from 31 Oct 2017 to today. And on that day, Dueling Fate came out with two new heros, pago and willow.
And if we keep going back, the HISTORIC 7.00 update and monkey king was there.
So, a VERY HUGE update recently? (Maybe right after the TI ends)
Source: https://www.reddit.com/r/DotA2/comments/yego7i/any_leak_on_this_update/