Stephen Wolfram's Introduction to the Wolfram Language [video] (opens in new tab)

This looks quite impressive, but I can't lose the feeling that "everything built into the language" simply means that everything got dumped into the same namespace. Anyway, now I'm curious enough to see what I can download to play with the language.

I'm curious about his 'knowledge-based programming' concept.

Will be interesting to see where this new language goes.

Right now it's not yet public, so you'll need to opt in to receive updates if you want to know when it's released.