Except the demo has HP, MP, Attack, Defence and Critical stats, also Speed stats were mentioned in an interview confirming we can use buffs from camping to increase the speed stat, not to mention activating phantom sword increases your speed, attack and defence stat while it's expending MP.
And he didn't say magic doesn't use stats, he said magic doesn't use the MP bar that is used for phantom sword, warping and abilities.
Magic spells uses magical rings and will still need w stat to determine damage output, while MP is still a stat for phantom sword, abilities and warping.
So at the very least we have HP, MP Attack, Defence, Speed, Critical and another stat for magic spells which will most likely be Intelligence.