Zero Rated Data Overage Data Usage Unlimited (XIP/PDS/RIM)

Hi. I'm probably into something that has already been discussed before but I can't find it in a search. I check my data usage pretty regularly and generally use about 30 mb per month on my 500mb plan. I see this month
that my 500mb usage is zero and a new line is now there. It's my subject line: "Zero Rated Data Overage Data Usage Unlimited (XIP/PDS/RIM)"

It says my usage from June11 to today is 397 mb but the word "unlimited" is there. I would presume it wouldn't matter if it said 3970 mb. Just don't want
an unpleasant surprise coming at the end of my billing cycle on July 10.

Does anyone know what is going on with Bell and their usage calculations?

Seems to me that something new might be on the horizon. Thanks

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I have the exact same thing on my bill this month.

Data Included In Plan Category:
Windows Email&Int 1GB Share Data Usage (0/1024 MB)

Unlimited Category:
Service zone (12.59 MB)
Social Networking Unlimited Social Networking Usage (77.1 MB)
Zero Rated Data Overage 3 mos Data Usage Unlimited (XIP/PDS/RIM) (989.4 MB)

No idea whats going on. When I checked the Self Service app, it reported close to 1GB, so I logged into the website to verify, since I still have another 10 days before my billing period ends.