Corrections - can I put in new findings?

So... I passed and I'm now going through corrections. One is to reduce word count and so I'm reading through and trimming fat. However, I just spotted something I missed, that I could add to my findings. It's a theoretical connection I hadn't spotted until now... All the groundwork is there I just need to add a few sentences. Fifty words?

But, crucially, it's a new finding that wasn't in my PhD when I was examined. Should I just save it for a paper, or slip it in now.