There's a lot this time.
Firefox OS is clearly leading the others.
Mozilla chalks up thousands of Firefox OS apps | ZDNet
Firefox OS 1.1 brings more basic features, including notifications, MMS - Liliputing
Firefox OS Sees Success, Gets Opened To New Markets – ReadWrite
As iPhone 5c Fades, Firefox OS And Android Square Off In Emerging Markets – ReadWrite
With Firefox OS, an $80 Smartphone Tries to Prove Its Worth | MIT Technology Review
'Firefox OS is because we want the web to win, not because we want Firefox OS to win' | ZDNet
Telefonica brings Firefox OS phones to Mexico, Peru, Uruguay - Liliputing
Linux Foundation: Open Source Tizen Is Alive And Well
First Tizen tablet launches in Japan, it's aimed at developers - Liliputing
Tizen makes stealth pitch to Samsung's Android acolytes | Mobile - CNET News
Samsung's Tizen developer phone could preview a future without Android - Liliputing
Tizen 3.0 to add support for multiple users, 64-bit architecture - Liliputing
The first Tizen device is already shipping (Samsung NX300M camera) - Liliputing
Tizen picks up steam, Samsung announces 36 new partners
Jolla and Ubuntu really are long shots.
Jolla starts accepting app submissions for Sailfish phones - Liliputing
Android support played a major role in killing Blackberry:
Jolla's Sailfish OS phones will feature Yandex.Store for Android apps - Liliputing
Hands-on with Jolla, the Nokia that could have been | The Verge
Canonical's long road to the Ubuntu Phone | News | TechRadar
The first phone running Ubuntu is on the way - Liliputing