OneDrive Storage changes a month away

Microsoft recently informed users of OneDrive that the 15GB free storage is to be reduced to 5GB unless you opted out. The chance to opt out and retain the full 15GB was earlier this year but now has closed:
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In July, users who currently have 15GB of free storage will have that reduced to just 5GB, however, if you completed the form to opt-out earlier this year, then you will be keeping hold of your 15GB storage. For those who didn’t opt-out, we’re sorry, but you will be reduced to 5GB. According to emails sent out by Microsoft, the date for the change will be taking place on 13th July 2016, although, some people have reported receiving emails stating 27th July as the reduction date.

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Subscribers to Office 365 will also see their unlimited storage reduced to 1TB but not until 2017:

If you are currently subscribed to Office 365 and have a mighty-fine storage quota of unlimited, then you will want to start preparing for when this changes to 1TB. This change isn’t expected to take place until 1st March 2017

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Reference

So if you have data that needs moving you better do it soon!

If your needing a new storage site then try looking through this 2016 guide of free storage sites:
Copy is closing its doors, but Dropbox, Google Drive, OneDrive, iCloud & more are vying for your data