Well, I ain't on expert at figuring disease out, but I've got a bunch of'em down here in south Alabama so I still getting my "continuing education".
It looks like maybe a bacterial of fungal infection in the tomato plant...pretty advanced case, too. I'd say probably the same for the pepper plants. I just today did my first spraying of my tomato plants with some Bonide Copper Fungicide...gardenfish recommended it to me. Two tablespoons (basically 1-oz) of the solution to a gallon of water. Wet the plants well with it. Do not spray when plants are already wet from rain or dew...spray them when they're dry.
I would cut/remove all the dead material from the tomato plant...it all goes in the big green garbage can...don't compost it. Get up the dead leaves, too. Even the yellowing leaves with dead spots could be removed but you need enough foliage left for food production. Like I said, this is a very advanced case. From what I understand (I'm still learning about it) the copper fungicide will slow the disease down, if it is indeed fungal/bacteria...but it's not a cure. It is recommended to start spraying soon after transplanting the tomatoes.
You said you had the same problem last year but you stated (I think you wrote "needs" for "beds", possibly) that this is a new bed with "garden mix soil". Is this the same soil that you planted tomatoes in last year? Disease will overwinter on plant debris, etc.,. It is a good chance that the disease overwintered in the soil and is showing up again this year.
I would get the copper fungicide and spray both the tomatoes and peppers...usually every 10-14 days unless you get a good rain and then it will need re-applying. Don't over-use it, though, as a copper-toxicity can build up in your soil.
This type of disease loves hot and humid conditions. Where are you located? (Hint: Put your location in your user profile...it helps people give advice.
Definitely trim up the dead stuff and dispose of it. Clean the ground debris.
Here is a link to the Bonide Copper Fungicide at Tractor Supply (best price I've seen)... https://www.tractorsupply.com/...
I use the spray in a 1-gallon pump-up sprayer. If you can find a Chapin brand, they seem better than the run-of-the-mill generic ones. The gallon treated eleven tomato plants today and I think I wet them pretty good with it.