What is this new Kaspersky Antivirus 13?

My friend told me about Kaspersky Antivirus 13.
He said that it is good to use and he said a lot of good things about this software.
That' why I'm very interested to know about this.
Is it a free software?
Is it worth downloading?
If so, then I will change my antivirus with this one.
Thank you experts
