Visual approach is an approach clearance, which means you are also cleared to
descend. No need to report leaving unless explicitly directed to do so by ATC.

Dave Butler wrote:

2) Its VMC and I'm IFR to Temple, level at 5000. At 25 miles out I report
Temple in sight. "N7NZ cleared visual approach to Temple, remain this
frequency til you're closer in". At this point I may descend at will,
right? When I do decide to descend, do I report leaving 5000?

Assuming 5000 was an assigned altitude, yes.

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