RROD will never be gone because it's a signal that something is wrong with the hardware. However, overheating problems have decreased severally with the falcon model. There always be some cases of falcons RROD, but you only have to take a look at some forums all over internet to see that the problem is far less important than 1 year ago, when cases popped non stop. In this post Sony biased people keep saying the problem is the same as before, but nearly all of them talk about "their friends 360" or make statements without any proof at all. If I have to talk about my experience, nearly all my friends with Xenon mobo, including mine, have had RROD but not any of falcon owners I know.
It can't be proved because we will never have official data, but I think less people posting everywhere their problems with the 360 means something.
PS3 is having problems with the blu ray drive, but it isn't as widespread as RROD. Anyway, cases of PS3 that stopped reading blu ray discs increase everyday. In Europe the problem is getting worst and technical services have even collapsed. Here in Spain, lots of people are reporting that problem, some newspapers talked about it because people had to wait 3 months to get their console back and Sony considers the warranty is only 1 year, when in Europe, 2 years warranty is mandatory for electronic products. I'll provide a link of a national newspaper talking about the issue, it even says that Sony only gives one year warranty (as I said that's no legal), but it's extending it because there are lots of people complaining.
http://www.elpais.com/articulo/internet/fallo/lector/Blu-ray/dispara/reparaciones/PS3/Gb/elpeputec/20080805elpepunet_8/Tes
Some people are stating that all blu ray drives which discs don't insert spinning are doomed, this seems far from true, but the problem keeps spreading as PS3 catalogue is improving and people start to give full use to their console.
I talked about that because people think PS3 doesn't fail at all, and it's only the 360, but it looks like the 2 HD consoles are having their issues, 360 worse as we have seen, but we don't know where the blu ray drive problem will end.