Taken from Apple's website:
Your precious memories, stored in iCloud.
Once youve enabled it on your iOS devices, iCloud Photo Library automatically keeps all your photos and videos in iCloud, at full resolution in their original formats, including RAW files. You can access and download them anytime from your iPhone, iPad, iPod touch, or the web.
Looks like they will build a web client to access photos. Hopefully means they will do the same for icloud drive
Your precious memories, stored in iCloud.
Once youve enabled it on your iOS devices, iCloud Photo Library automatically keeps all your photos and videos in iCloud, at full resolution in their original formats, including RAW files. You can access and download them anytime from your iPhone, iPad, iPod touch, or the web.
Looks like they will build a web client to access photos. Hopefully means they will do the same for icloud drive