Read the relevant caapter of the official history of MI5 'Defence of the Realm' by Chris Andrew
Defence of the Realm was published in 2009. The first open source account of Raketno-Yadernoye Napadenie ('Nuclear Missile Attack')was in Ch4;Operation RYAN; of Andrew & Gordievesky's book "Instructions From The Centre" published in 1991. Whilst there were various references to Op. RYAN prior to that, although not by name, it was the first occasion I can recall it being linked to Able Archer.
So in response to the OP, not fresh news at all, in fact very old news indeed.
YS
For reference:
Instructions From The Centre ISBN 0-340-56650-7