Given how incredibly quickly HIV mutates, thanks to its "sloppy" copying mechanisms, it would surprise me if any cure remained effective for long. This isn't a battle, it's an arms race.
Personally, I'm already extremely impressed and cheered by the following:
* When AIDS first started killing people, we didn't even know with certainty that the causal agent was a virus.
* For a long time, we knew it was a virus, but could do essentially nothing about it, except prevent it.
* In the nineties, better treatments extended the lifetime of HIV-positive patients.
* ... and now it's basically a very expensive and somewhat dangerous chronic illness, rather than a death sentence. (Unless you're a rapid progressor.)
This latest news is nice, but prevention and fast, aggressive testing and treatment are still the way to go. Bone marrow transplants are MUCH more dangerous than anti-HIV cocktails, and the vaccine seems like it would be more likely to work in models than in people (at least for very long.)
I worry when stories like this come out that people will get careless about safe sex.