Those SkyDrive users who haven’t been following the news may get a bit of a surprise today: Microsoft’s cloud-based backup, sync and sharing service has officially renamed itself OneDrive after losing its trademark dispute with UK broadcaster BSkyB.

Rather than simply rename itself – the Windows, Android and iOS apps have all been updated, with the Mac version to follow shortly – Microsoft threw a ball to celebrate OneDrive’s launch, giving free storage to the party guests.

To mollify those users who didn’t receive a shiny invite, Microsoft has more good news for existing and potential OneDrive users: by keeping an eye on its new @OneDrive Twitter account, users can find out how to become one of a “select” 100,000 users who will be given 100GB free storage space for a year.

The OneDrive Android app gets more than a simple name change with this release.

The service also rolls out a new referral bonus system. By encouraging friends and family to sign up, users can boost their storage by 500MB per referral (up to a maximum of 5GB).

Also updated in the last 24 hours is Microsoft OneDrive 17.0.4029 for Windows. The Mac version wasn’t updated as of press time, but should be available soon once it’s been approved by Apple. Note that Windows 8.1 and Office 365 users may have to wait longer before the new name to appear.

OneDrive for iOS 4.1 was primarily a bug fix release alongside the name change, but OneDrive for Android 2.0 is a much bigger update.

Android users now gain access to Camera Backup, which enables them to automatically back up all photos and video shot using their device’s camera to the cloud. Switching this on earns Android, iOS and Windows Phone users an additional 3GB of storage space on top of their existing quota.

The latest version has also been redesigned to better fit with other devices and the online interface when accessing OneDrive through a web browser. This includes larger thumbnails and what Microsoft terms as “nicer” photo views.

The update also promises improved support when working with Office Mobile for Android and OneNote, particularly when editing documents. It’s rounded off with the usual collection of non-specified bug fixes and performance improvements.

Those with more than one Android device should be wary, however – at the present time, it appears the camera rollback feature only works on one device. Other criticisms include a continued lack of support for selecting multiple files and an inability to store files for offline access.

OneDrive (formerly SkyDrive) for Android 2.0, OneDrive for iOS 4.1 and Microsoft OneDrive 17.0.4029 for Windows and Mac are all available now as a free downloads.