Last week, the first revision to MPLAB X has been released : http://www.microchip.com/MPLAB
You can find below an extract of release notes :
1. Support to debug multiple sessions and switch between them using the sessions window
2. Support for library dependency and link order adjustments
3. Preserve User ID
4. Support of Runtime breakpoints
5. Requests to persist a previous versions configurations on updating
Willing to get fast up to speed with MPLAB X and increase your daily productivity ?
Please check the 30 worldwide Microchip Regional Training Centers (RTC) planning where both presential and live-online trainings are available.
Look for the following traning classes : TLS0101 or TLS0101X (Getting started with MPLAB X) and TLS0999 (Migrating from MPLAB v8.xx to MPLAB X)
Registrations and planning : http://www.microchip.com/RTC