The new process gives you a pop up and requires you to go through several steps to copy and delete them.
There used to be a couple tweaks called Clipshot and Almpoum that allowed you to copy screenshots to the clipboard by default.
But I don’t want to save it to camera roll, most of my screenshots are incidental and I don’t want to save them. Having them copy to clipboard by default is by far the best system.When you take the screenshot, you just swipe the pop up to the left to save it to camera roll. Tapping on it, is so you can crop, edit, save, delete etc.