We've released a new theme called Tazo, which takes the Minimal theme layout and then arranges the media in your gallery in to a fully justified 'masonry' style layout regardless of the dimensions of your images. What's more, the size of the images and margins between each 'tile' are configurable via the theme editor.
We are also working on bringing this layout to the existing Minimal theme as a gallery layout option which means you'll be able to have some galleries operating as a vertical list and others operating like this new theme. Our Tazo theme is currently in beta but don't let that stop you from adopting it! For more information on themes for your portfolio please see how do I change my Portfolio Theme? and also customizing the Look & Feel of your Portfolio Theme using the Theme Editor.
We've also added the option to allow your visitors to share your work on Pinterest, although this option is not enabled by default. Should you wish to enable it please see our article on how to enable sharing of your work over social media networks
We have some exciting new features in the pipeline which we're hoping to reveal in the not too distant future - stay tuned! :)