Hi,
it usually is okay to install the GnuPG installiert over the Gpg4win installer, if it is the same major version. So Gpg4win 4.1.0 comes with GnuPG 2.4.0 which is major version 2. So using 2.4.2 should be fine.
But yes, a Gpg4win release is forthcoming (as announced in the GnuPG 2.4.2 mail).
Regards,
Bernhard