I just found this from 6 months ago on Lorraine and they asked her if she was filming something and she started stuttering and said she's got other TV projects so possibly. I'm not sure how in demand she is for anything else.
https://www.youtube.com/watch?v=aTHzYL-sLWE
But 6 months ago seems a long time to know about January's CBB, no? Although, I know Danniella Westbrook signed up for January before UK vs USA.