I believe we all should have gotten this OWP invitation letter from AINP. I got the same email. I think we need to look at this in the light of our individual applications. My visa office, Accra, seems to have a good processing rate for PNP. PPR are usually received 3-5 months after MR due to the number of PNP applicants in that VO. So I may not be applying for the work permit. For people whose VO has communicated long processing times, this is an option at least to be in Canada in a short time.
Everyone should access his individual position.
ofonzo