Didn't I read somewhere that, on the return leg, you have to stop/change at Brussels Midi for immigration checks? That's a bit of a pain if it's true.
Comments on the article suggests that to be the case:
Ah, but the press release didn't mention the extra hour for the return journey because the border controls haven't got their act together.
Correct: These are also only the launch timings; they will change again at a later date once the full border check services are in place.