November-Patch at Microsoft. And with KB 2899513 there will be news and fixes for the sync-Client OneDrive for Business.

the following changes will established after the patch:

• Improves OneDrive for Business so that it allows synchronizing to an Information Rights Management (IRM) protected SharePoint library.
  (there have done it already with the Oktober-patch)
• Improves the file syncing ability and the Telemetry logging feature.
• Improves localization in multiple languages to make sure that the meanings are accurate.
• Improves the file syncing ability for OneDrive for Business.

Languages?

Yes, this time you may have 40 languages for the OneDrive for Business Client:

You may download the OneDrive for Business client as a Click To Run (C2R) package in another language from the download page of the OneDrive blog site of Microsoft. Press there the Plus-sign an decide your language and your OS (32 or 64 Bit version)
This time Microsoft does not provide any msi-package.

Groove.exe Oktober-Patch (alt)	Groove.exe November-Patch (neu)

the actual version number is: 15.0.4667.1000

To read the actual version of the groove.exe you may switch to the folder
“C:\Program Files\Microsoft Office\Office15”. There is the Groove.exe installed.

I’m hoping, that this package will actually improve the sync problems and is more stable then the old version.

[Update 11/16/2014]

There is another patch for OneDrive for Business with sync errors: KB 2899510