Does DSM 7 update the kernel?

My NAS is running a old version (3.10) of the kernel. It's on DSM 6, latest version.

I would like to test run Wireguard as an alternative to OpenVPN. But the kernel version is too old.

On a sidenote: Did any one that uses a DS418play or 416play upgraded to DSM 7? If so, does Docker work (sideloading the SPK)?

Thanks.