I think it's just a description of the overall planning consent, taken verbatim from the planning register, and pasted into an announcement that the first stage, i.e., the Sainsbury's supermarket, is starting on site. That's why there is a reference to the hotel, which has not been deleted from the project, but has been postponed and may be abandoned in the future unless it can be made sufficiently viable to attract a hotel operator.
I'm not sure where these images are from, but I suspect they are from a general building-industry online publication or projects-survey that lists all major new projects that are starting construction. The tabs at the top that read 'projects', 'companies', 'regions', and 'sectors' would be consistent with that.
I'm confident that this is not an indication that work is going to start on the actual stadium. It's just a database showing that Phase 1 is starting, with the details of the whole development pasted into it by someone who wasn't paying attention.
So everyone can calm down again.
EDIT: Yes, it's from
http://www.glenigan.com/, which is exactly what I thought: a construction-industry survey website that provides information for contractors and subcontractors on what developments are inviting tenders or about to start. Now I'm 100% certain that the actual stadium has only been included in this announcement because some nitwit pasted the entire planning consent summary in, not because the stadium is actually going to start on site.