The IOS Rep. has now gone online. It lists all valid new combinations for succulents during the period from the previous issue. These are all combinations validly published according to the "rules", which does not mean they will be generally accepted or that you are required to use them in preference to previously accepted ones:-
http://iosweb.org/rps.php" onclick="window.open(this.href);return false;
However it is a way to keep up to date with the publications of new species and others opinions as to what genera previously published species should now belong to.