As I understand the Bill, it does not specifically create a category of union for same-sex couples but rather enables people to come together in a recognised civil union that is not marriage. According to IOL:
The Cabinet announced on Thursday it has approved a bill that will recognise domestic partnerships between adults who choose not to conclude a marriage or civil partnership, and this includes same-sex partnerships.
This change has been long overdue and the passing of this legislation will mark an important shift towards greater equality between people who choose to or are able to marry and those who do not. Of course it is a tremendously important piece of legislation for the gay community which has generally been treated as a community of second class citizens.