This holds true for both Windows Phone and Nokia X range of devices. I have just checked it on my Nokia X2 review unit and I can see 30 GB storage for my newly created Microsoft account.
For those who are new to OneDrive,
If you are using Windows Phone, just allow auto-upload of photos from the Settings—> Backup
If you are using Nokia X, Nokia XL, Nokia X2, then go to OneDrive—–> Settings——->Camera Backup and Toggle camera backup on