Pinterest is getting ready to roll out a new, improved design. The new Pinterest will feature bigger images, better navigation, and a new menu of related pins next to each pin you view — you know, the better to suck your not-so-precious time with.

It ain’t just a prettier face, either; Pinterest reps say it has done a backend overhaul to give the service more speed, as well.

In a blog post on the changes, Pinterest engineer Vy Phan writes that the new look-and-feel will be rolling out to a select group of beta testers first for bug-finding. The changes should be available for everyone within the next few weeks.

Here’s an up-close look at the changes:

As you can see, the new pin view shows a larger pin that takes up more screen space, putting pinned images front and center. Also, on the right-hand side, you’ll see a new column for related content — pins from the same source on the web and from the same pinboard.

We’ll know more soon about the backend bits, as well, a Pinterest rep tells VentureBeat.

Pinterest had a huge year in 2012, and its much-copied interface sparked one of the year’s biggest and best design trends. It’ll be interesting to watch the product — and its pretty face — evolve and mature over time.