Last month, Microsoft did a massive downgrade on all its OneDrive accounts, getting rid of unlimited storage, cutting large pay plans and decreasing the amount of storage for free tiers. Today, they're backpedalling on some of that, but you'll need to opt-in to get it.
One thing Microsoft didn't backpedal on was the unlimited tier. That won't be coming back under any circumstance. However, some existing OneDrive users can get grandfathered in with some of the old features, provided they're willing to do a little leg work. This comes from the OneDrive support page:
Office 365 Home, Personal, and University subscriptions will continue to include 1 TB of storage. Any subscriber who received additional storage as part of our unlimited offer will keep it for at least 12 months. For anyone unhappy with the decision to not offer unlimited storage, we will offer a full refund.
For customers of our free service who have over 5 GB of content and who are directly impacted by the storage change, we will offer one free year of Office 365 Personal, which includes 1 TB of storage. These customers will receive an email with redemption information early next year.
In addition, for our biggest fans who have been loyal advocates for OneDrive, we are adding a new offer that lets you keep your existing 15GB of free storage when the changes happen next year. If you also have the 15GB camera roll bonus, you'll be able to keep that as well.
So, if you want to keep that camera roll bonus, opt-in at the link above. If you're a free user with more than 5GB of content, keep an eye on your email for an offer to get a free year of Office 365 Personal. If you're annoyed at the lack of the unlimited option, send off an email to get a full refund.