WordPress.com developers have released an updated edition of Jetpack plugin suite for the users of self-hosted WordPress blogs.

This update would deliver updated imagery for sharing buttons and other images provided by WordPress.

It also comes with support for Pinterest sharing button which was much in demand by the users.

Changelog:

We’ve updated all the icons in Jetpack, including the Sharing ones, all the dashboard graphics, to be HiDPI.
Many retina updates for core weren’t ready for the 3.4 release, so we’ve bundled a hotfix that brings all the Retina improvements for 3.5 to Jetpack blogs, today. You won’t have to wait for December 5th to get all the improvements, download or update Jetpack today.
All Gravatars, mshots, and images embedded from *.files.wordpress.com will show up high-resolution.
Finally as a bonus, this release includes the much-requested Pinterest share buttons.