The designs for what the screen will look like have not been completed yet. I couldn't say exactly what the language will be. From what I've seen thus far it will be clear that there is a choice to be made, but the default selection will be to enable telemetry.

Here is a draft of what we're considering: https://bucket.agilebits.com/ben/telemetry-consent-draft.png

Does that help clarify what the experience will be?