As stated in Release notes for 1.7 I'm trying to use
experimental: {
uniformColorPalette: true
}
I really like new colors, but is there a way to see them all like the ones now on docs site?
Is there a "future" version to see master branch news day by day there?
Something like:

Why not?
Not yet, maybe eventually. Takes a lot of work to make that happen, which means we have to _not_ work on other stuff :) For now, best way to keep up with experimental stuff is via GitHub and release notes.
You can take a look at my comment here: https://github.com/tailwindlabs/tailwindcss/pull/2132#issuecomment-675639181 :)

Code Sandbox: https://codesandbox.io/s/tailwind-color-palette-comparison-f1igi
I wrote a Color Theme Explorer for Tailwind CSS which supports the upcoming color palette. Super handy if you have to tinker with the Tailwind CSS colors.
Most helpful comment
You can take a look at my comment here: https://github.com/tailwindlabs/tailwindcss/pull/2132#issuecomment-675639181 :)
Code Sandbox: https://codesandbox.io/s/tailwind-color-palette-comparison-f1igi