If you've been on the fence about the new textures that Mojang has been preparing for a while, or if you're just curious to try them, the team has released a sample pack of their current progress.

I've tested it. I like how most things look, the textures look smoother (but not blurry) and they're still colorful, which is how I like my games to look. Some of the items could probably use some tuning still, that minecart especially stands out.