These replies do not help. For people who don't want to live on Ubuntu LTS versions (and such people probably don't want to install the first version of a new OS), Luna is "over 2 years old", and it was already seriously out of date when it came out.
Elementary OS know what people mean when they say Luna is out of date (all the packages are over 2 years old), yet give an answer that completely ignores that issue.
For another viewpoint I'm running dev of a side project on an elementary laptop. Since bleeding edge of postgres and python doesn't matter much for me it is actually quite good. (relational database, no scaling problem for now and python packages are installed using virtualenv and pip. Sublime text also works nicely on two year old kernel )
Looking at it from the other side, if you have newer hardware Elementary OS may not work properly on your machine because it has an older kernel that may not have the drivers.
If the target audience is laptop users this is definitely going to be an issue.
Elementary OS know what people mean when they say Luna is out of date (all the packages are over 2 years old), yet give an answer that completely ignores that issue.