Uninstall the beta?

[Ace_wanderer]

If I purchase D3 will it use the beta files or install new ones?

[Raesene]

It's a separate client. It will install new files.

[Neinball]

Yes, once the beta closes down it will be safe to uninstall the beta.

[Siege Valgore]

Keep it around for Nostalgia value.

[DegenTP]

Yeah you can already download the full client if you pre-purchase on battle.net which I did but it wont let me use that client for the beta I had to download the separate stand alone Beta Client.