That's not a rumour: Sarah Schechter said as much during the Comic Con round tables.
If you're a die hard SG fan then it's worth digging out the thread on the sg.tv site's forum where I collated all the Comic Con interview videos (or the equivalent posting on Tumblr where someone else did the same) and sitting through all the producer/writer videos (Andrew, Greg, Sarah and Ali) rather than just Melissa's videos. The writers give a way far far more info about happened to get the show on air, and what's coming up in the future, than the actors do. Andrew, in particular, is very open about giving little snippets of upcoming plots and scripts, while Sarah's interviews often mention how the show got started and got commissioned.
R5