The latest news today is that Cala are again challenging the Secretary of State. You'll remember that DCLG issued a series of announcements last week that the Government was abolishing Regional Strategies anyway and that should be taken into account as a material consideration. Cala are applying for a declaration that it is not material.
Presumably the argument could also go that in the same way as the SofS can't revoke RS so as to undermine the purpose of the legislation, nor can he downgrade their materiality. And the argument could also be that the change of status requires Strategic Environmental Assessment.