We just got off the phone with a number of RadioShack locations, and each one has confirmed that the retailer is now quietly taking pre-orders for Sprint’s HTC EVO 3D. We were told that, interested users should rush to the store as pre-order quantities are very limited. Employees did not confirm when the EVO 3D would be available for pickup, although we suspect it won’t be a very long wait. Best Buy also began taking pre-orders earlier this month, but it too neglected to reveal when the phone would become available. We went hands-on with the EVO 3D during CTIA and were impressed by its glasses-free 3D display. We also loved the solid, albeit beefy, industrial design.