I have been using this tip shape for the last 10 months.
It is great for getting around and under things you are soldering.
As the tip is bent, you can easily move the contact point on the target to achieve more/less heat transfer.
The version I have is series 936 but it works well on my Hakko F888D iron.
I Run the tip at ~410C.
Highly recommend using this.
(probably invented by someone who dropped the iron on the floor.)