Hi Ontos,
There doesn't appear to be any 'official' English version as yet.
However, there is an English patch (in Googlish, rather)
that should tide you over till then,
There's also a 'beta-fix' to update the SPM 1.5, which is still officially a 'beta'.
Confused yet?
Fear not, the summary below (the activated mods box) displays everything needed to get SPM 1.5 up and running, in that sequence: