In reply to Glyn Davies:
Hi Glyn, I'm not sure why it's not showing an update available - that's an error, I'll look into it.
You should update your North Wales Climbs package to get all the new slate stuff - all the slate areas have been redone.
You can't use the normal mechanism for updating obviously because it's not showing you the update button, but you can achieve the same thing by deleting the installed package and downloading it again.