I just downloaded and installed it. How about you? The tests (published by the developer) show it to be superior to other systems, but I'm sceptical.

EDIT (forgot to mention the first impressions I had of it):
OK, it really is faster (so far), but it bothers me that my taskbar doesn't pop-up when I get to the bottom of the window (just the first impression.

what is the name of the program exactly?

Safari

http://www.apple.com/safari/

I've heard that it's buggy for now, what is normal considering it's a beta. I'll wait until I should be convinced that the change is worth it since my current choice does the job so well. Glad to see another browser in the fight to claim the title of fastest one.