This PR was posted in Dew's readmefirst file back in March.
He and others didn't think it was significant back then.
The way the biotech market places treats GTC, a better expression system in the future seems to be anticipated, but it is very difficult to prove that one way or another just by doing superficial due diligence on company press releases. One almost needs to be a researcher in the industry to have a good idea of what the future might hold.
I would look to see how their next partnership is structured to get a better idea of what the industry thinks.