GCSE top grade boundaries

[stubiff]

For those interested in the new top grade boundaries, please see here.
www.gov.uk/government/news/how-the-top-grades-will-be-awarded-in-new-gcses-in-2017

I can't even make sense of that.
I could understand normalising the grade distribution (O-level style).
Or grade = threshold for knowledge (previous GCSE style).
This seems 2 b a weird mash up of both systems!

3.7 or 4.2, they both round to 4.