Lollipop Update

Okay this is kind of weird because I know T-Mobile has not rolled out the update. In fact I believe they are completely refusing to do it to force people to resort to upgrading phones. But I got this system update on my phone this morning and I am wondering if anybody has gotten it as well or has any explanation. I haven't downloaded it yet.

T-Mobile SGH-M919. Weird because it says the GPE

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