Sony isn't going to stop fullframe camera production anytime soon, IMO. There has been no indication of it, outside of that Thom Hogan guesswork.
It's not as if Thom made this up or that it was merely his speculation. He reported that he was hearing things that appeared to be coming from inside Sony. As has already been noted in this thread, that doesn't mean Sony ceases making 135 format DSLRs, but they might have the sensor chips outsourced -- after all, if Nikon stops buying them then Sony is on the hook for the entire production run, and I don't think Nikon actually bought a lot of sensors for the the D3x.
Remember also that this rumor started nearly six months ago. It could well be that the pro-"full frame" factions within Sony got precisely what they wanted by starting this rumor; that is, that Sony has been forced to now proclaim that they will continue to offer "full frame" DSLRs. The thing is though, I saw some hesitance in Sony's statement, as if they were saying they have to because it's expected of them and it seemed pretty clear they aren't terribly enthusiastic about it because it's something of a loss-leader for them.
What I found particularly disturbing in the recent announcement was the implication that future 135 format DSLRs from Sony will be SLT and not SLR models (the interviewer has essentially said in a Sony DSLR forum thread that he thinks that is where Sony is headed). Frankly, I'm not sure I like that at all and I can think of a few reasons to be bothered by it. As with all rumors and speculation though, I'll just wait to see what happens and cross those bridges when I arrive at them.