I haven’t seen too many articles about this, but apparently it was first reported five days ago: Joe Saward and David Tremayne are named in Companies House records as being on the Caterham Cars Group Limited board of directors:
(No need to take anyone’s word for it, though — you can go to the Companies House site and see for yourself.)
I can count on no hands the number of times I’ve seen an F1 journalist declare a potential conflict of interest in an article, and I’m guessing no one is likely to start now. Besides, according to that second post I link to above, we shouldn’t care: any F1 journalist worth reading has some sort of commercial involvement with the sport. Okay, then!