The IEPs▸ have kitchens, and I would expect the very similar AT300 units for the longer distance services will also have kitchens.
What we don't yet know is whether or not a buffet will be provided, personally I rather doubt it, based on the IEP saga. The survey to prove that a buffet is not wanted has already been done.
Whilst buffets and kitchens definitely have their place, particularly on long distance services, they do take up a lot of space and are relatively expensive to run.
There's also the argument that many people prefer to bring their own food and drink on board (much cheaper, coffee from a proper espresso machine etc), and that the young in particular are reluctant to pack up their electronic gadgets and wander to a buffet. So in some respects I think wanting a buffet may be a generational thing.
To be honest, the only time in the last few years I've bought anything from a buffet was a cup of tea for me and the missus because we got on at Pewsey and there wasn't anywhere to buy a coffee there.