Unsurprisingly, the response on social media has not been the most positive.
Days Between Dota 2 Patch Releases
This is something GosuGamers has looked at in the past.
Patches have definitely gotten longer in recent years.

Dota 2 patch 7.32 lasted for 240 days, which is approximately 8 months!
However, the current patch (Dota 2 patch 7.35) is not that far in its journey.
In addition to that, we got Dota 2 patch 7.35 earlier than usual this season.

So it isnt too much of a surprise that Dota 2 patch 7.36 hasnt been released yet.
Fascinating as that number may be, that is a long time between the release of two new heroes.
But it isnt for the lack of a new patch.
If anything, the current Dota 2 meta is relatively balanced and promotes many different heroes.