New games can't be pre-ordered in the Ps4 Store?

You can pre-order the new Assassins Creed Valhalla and Watch Dogs Legion in the Xbox Store and not in the Ps4 Store…

Why?

When can you pre-order it in the PSN Store?

Maybe because this is still underway.

Otherwise it could be that the release of the Xbox version z.v. A week earlier or that Sony just forgot.

Just be patient. At Sony, it usually takes a little longer to pre-order the games.

They'll be there soon. Doesn't matter one day earlier or later. 😅