Alton Towers has applied for planning permission about the lawfulness of maintenance works on Nemesis.
Could this be the start of a retrack of the ride and possibly SW9?
"The application seeks to confirm the lawfulness of maintenance works to the 'Nemesis' ride, an existing roller coaster at Alton Towers Resort."
http://publicaccess.staffsmoorlands.gov.uk/portal/servlets/ApplicationSearchServlet?PKID=157904
