Raymond is referring to this BBC article: http://www.bbc.co.uk/news/science-environment-18561092
It was (distastefully IMHO) published on the day of the centenary and makes a number of schoolboy errors about Turing and suicide:
1. It omits to mention that a significant amount of cyanide was found in his stomach in liquid form. But does mention the fact that the 'apple was not tested for cyanide'. If you omit the former and mention the latter it sounds suspicious. And why would you test the apple for cyanide?
2. The article makes great play of Turing's happiness shortly before his death. This misses the fact that many suicides are outwardly 'happy' before taking their own lives and is so basic that I'm amazed the BBC allowed it.
3. The article plays up Turing's mess in the house and mentions: "The electrolysis experiment was wired into the ceiling light socket.". This was a common practice in those days and I remember adapters wiring things into light sockets as a child in the UK.
4. The article also likes to try to downplay everything negative. For example, "It is often repeated that the chemicals caused him to grow breasts, though Turing is only known to have mentioned this once." The second clause seems to be the most important.
5. The article is rather ugly in that it engages in a bunch of speculation and then ends with the 'expert' saying it's best not to speculate.
But the worst part of the article is that it contains nothing new. The doubt about Turing's suicide is well known and documented by his mother, Hodges and Leavitt. There was nothing newsworthy in the story.
"More: behind much of today’s hagiography there seems to lurk a sort of perverse insistence that if Turing hadn’t been gay and a suicide he would be less apt for veneration, as a founder of computer science or anything else."
I'm not sure where Raymond gets this.