Well my understanding is that it is here to stay - until the European airspace classification is changed and the CAA will not be able to twiddle with things just becasue they can.
Along with the new classes of airspace one would presume there will be new 'service levels' - but at least they will be common across Europe (although given the EU's usual approach not anywhere else...).
Is it just my perception but the number of times I actually get a 'traffic' service seems substantially less than a RIS? In other words there is less 'service' available as a direct result of these changes?