Yeah, I heard that too. But he wouldn't go "oh, I am gay, didn't you know that?" on national radio.
I remember some joking from Chris Moyles when Tom Daley called in and Chris said something to the effect of "Tom, you have so much in common with Aled" (the gay producer). Maybe it meant nothing, I just found it odd.
probably just down to the way Tom talks cos hes so polite and soft spoken.
Your right he wouldnt come out and say it on national radio. hes got enough pressure on his shoulders to win a gold medal without the press stating that he had come out as gay (thats if he was of course)