Matt wrote:

The OSG was last "revised" in April 2006

Oops, I missed that. Does it still refer to a shower "cubical" [3.6.1(v)]?

but as far as I can tell the only change was the IET reference on the
rear cover.

Which seems odd since they've said that the 17th ed. will still be
subtitled the "IEE Wiring Regulations".

--
Andy