If someone pre-orders ESO and gets the early access code from the retailer or directly from Bethesda, does that automatically get them into the beta this weekend?

I noticed that there was no beta key in the beta notification email that ZOS sent yesterday so there was no key to forward like in the previous beta announcement emails.

Pre-orders do get early access, but no, it doesn't automatically get you into the beta weekend. They give you a special beta key to apply to your account to get in. You still have a few days until it starts, so if you just bought the pre-order you still may get an invite.

No. Purchasing the game and beta access do not having anything to do with each other. If you want into the beta there about 20 ways to get a key. Everyone and thier brother had a invite a friend key last beta. Ask for one of those. There were 4 or 5 sites that were giving them away. Probably some left. I have mine away to someone on this forum so I can't help again. Good luck

Pre-Order does not give you beta access. Pre-order however give you early access.