I don't have a K CPU, just the i5-14600, but you can set several OC profiles in the BIOS. I have not had a BIOS update.

Yes it has these slots but check Asus for the full specifications

Yes, it is supplied, but it is not a heat sink. It's just stuck onto the M2. I think that's more for looks.

This is an ATX

Red

There is a QR code that redirects to a PDF in all the languages available in the box. Or visit the official website.

The latest BIOS update (vH4) has the following in the description if this helps: Support 14th Gen CPU. So with BIOS update probably yes.

Ist ATX