The plan is to integrate the services within the Mainline concession.
As from December 15 all NSHispeed coaches for the Amsterdam-Brussels service will be refurbished (again). In the meantime all loco hauled trains by NSR will be replaced by EMU's and also send for the refurbishment. From summer 2 experimental ERTMS DVT's will be constructed from 2 of the refurbished coaches. Testing these DVT,s will be done during night time periods and later within revenue earning services.
If successful (however prohibitory expansive to make a DVT. Out of a 30 year old coach) up to 25 DVT's might be build for pull-push services using the HSL.
Amstefdam to Breda will remain the 2 tph frequency.
Amsterdam to Rotterdam will be introduced with a 2 tph frequency as well, offering 4 trains per hour on this section.
Alse the Amsterdam - Brussels train will use the HSL but has a rather odd route making the journey even longer, but will be serving more destinations as Breda, Noorderkempen and Brussels Airport.
By 2016 all 270+ coaches will be used on trains using the HSL.
And yes, 160 km/h isn't fast. But the time gained on Breda to Amsterdam at 250 instead of 160 km/h is a mere 5 minutes and after the Fyra debacle NS isn't keen to much more experimenting. Furthermore... The company lost hundreds of millions in this adventure already.
From 2018 new trains will be tested. These trains should be able to operate at 200 to 225 km/h replacing ALL loco hauled HSL services and use the other 200 km/h lines as well.