It is more likely to snow in Joburg in January than this fairy tale to come true.
Even if they "are" working on this little dream of theirs, experience have shown that they will complete it YEARS after their first envisioned completion date. Furthermore they will handle it the same as the fabled 10mb lines which they will only provide in a few choice exchanges so that they can tick the "we provide 10mb access" box but not implement it on a large enough scale that the bigger population can benefit from it.
I'm sorry to sound so negative, but this is just the reality that Telkom has shown us over many many years, and until they can consistently prove otherwise, this is what the public will believe about them.