Tiliam research has taken the technology from their standalone stabilisation app called MotionBend and released a plugin for Final Cut Pro X and Motion. 

Arctic Whiteness has just announced a new app called Final Cut Library Opener that allows a collaborative workflow with FCPX by automatically opening up an ephemeral copy of another user's Library.

Soho Editors and Ronny Courtens have teamed up to showcase the strengths of Final Cut Pro X in the broadcast arena, with relevant partners and high-end case studies of real world user experiences from across the globe. Join us as we showcase a range of Final Cut Pro X presentations by international broadcast professionals. All demonstrating the latest tools for the modern editor.

It is billed as "The most comprehensive and powerful grading tool for FCPX" CoreMelt has just released Chromatic, a $99 colour grading tool for Final Cut Pro X with wheels, curves and best of all, Mocha mask tracking.