What are you talking about. This is a quote directly from the page you’ve linked to:
> At the same time, with the introduction of DSM 7.3, 2025 DiskStation Plus series models offer more flexibility for installing third-party HDDs and 2.5" SATA SSDs when creating storage pools.
As German IT news media has retracted the "Synology reverses" story based on the content they are reading in the press release link, I suspect there is some Geo-stuff involved here (I tested this from multiple German IPs now and always get "the other version").
> At the same time, with the introduction of DSM 7.3, 2025 DiskStation Plus series models offer more flexibility for installing third-party HDDs and 2.5" SATA SSDs when creating storage pools.