OneDrive universal app coming in late 2015
Microsoft outlines upcoming Windows Cloud features
During a session at Ignite 2015, Microsoft showed a roadmap detailing upcoming features to OneDrive cloud storage service.
New features expected in Q2 2015: New mobile PDF experience for Android and iOS; Send a link from Outlook Mobile on Android /iOS; Save to OneDrive for business from OWA; Expiration of anonymous shares
New features expected in Q3 2015: Next-gen sync client (Preview) for PC & Mac; Unified web UX; Mobile offline files (read-only) for iOS / Android; Stop/revoke sharing control; Company –sharable links
For Q4 2015 Microsoft is planning: Next-gen sync client; Windows 10 universal apps with offline files
In addition, Microsoft Cloud Storage OneDrive will be improved with offline mobile editing, offline mobile folders, mobile PDF annotation support, modern attachments for Outlook, expiration of all external shares. These improvements are planned, but without specific timelines.
The most important news for Windows (Phone) 10 users is the new universal app that will work on phones, tablets and PCs. According to these slides, Redmond is targeting the end of 2015, when we should be able to install the new OneDrive client for Windows 10.