We've read that Telkom is implementing uncapped local access, as mandated by ICASA. The regulation states "local bandwidth shall not be subject to the cap", but nobody seriously thinks Telkom will follow this to the letter. There is a huge market in inter-office VPNs over ADSL, and Telkom don't want to lose out on that revenue stream.
Currently the savvy users out there use hacks like mine to least-cost-route local traffic over cheaper IS "Local-Only" accounts (like these). Hell, even ISPs route their clients' local traffic over the IS Local-Only accounts.
From what I've heard from the friendly frogs, Telkom are really just going to keep it simple, and implement the equivalent of IS DSL accounts, where after you get capped, you get another, local-only cap. This can be implemented with Radius only, and will (to some extent) prevent the service from being abused be everybody.
So yes, we all still need our separate IS Local-Only accounts, and do our own LCR.
Anybody who thinks Telkom is doing any good for South Africa, go and sit in a corner now!