Technology is changing constantly. There are improvements that we could benefit from. But the system is still going to work. However, it might be frustrating for users if the technology is not the best. Let's take Word, for example. There is version 4 and now there is version 8. They both do the same thing, but version 8 might be easier to use, given the new technologies.
On May 1st, 2012. See this statement in context.