Microsoft has updated the Yammer app for Windows Phone 8 to version 1.4, improving support for image attachments and adding the ability to navigate to shared conversations without leaving the app. There are also a number of design improvements and bug fixes.

Yammer is a social network service for enterprise, which was acquired by Microsoft last year, and is intended to enhance communication in the work place by bringing "employees, content, conversation, and business data" together in a single convenient location. It is sometimes described as "Facebook for business users", with an aim of improving productivity.

The latest version follows on from an update earlier this year added support for previewing Office files and creating an account within the app.

Microsoft's roadmap for the Yammer products calls on it to be a "conversation layer" for Microsoft's enterprise products, integrating with existing products such as Office and SharePoint. This strategy extends to Windows Phone as the mobile client of choice for Microsoft's enterprise products lines. Future updates of the Yammer app should reflect this and, ultimately, we expect to see Yammer integrated into a future version of Windows Phone.

Windows Phone Store description:

Yammer is the best-in-class enterprise social network that makes your job easier and more productive. It brings together employees, content, conversation, and business data in a single convenient location, keeping you connected to the people and information you need to get work done. Whether you're in the office or on the go, collaborate, communicate, and share ideas in real time by using Yammer to browse company conversations, discuss your projects, and get answers to questions – fast.

1.4.0.0 Update:

- Image attachments now appear in conversations and messages
- Navigate to shared conversations without leaving the app
- Upload multiple images at once
- Design improvements and bug fixes

Yammer is a free download from the Windows Phone Store. The new version is for Windows Phone 8. An older version of the app continues to be able for Windows Phone 7.5 devices.