Google plans to let Pixel smartphone enthusiasts test out the company's next handset ahead of its public introduction. From a report: Google has invited members of its "Superfans" group to apply to test future Pixel hardware, asking entrants to profess their knowledge and passion for the brand in hopes of being able to beta test forthcoming products. Consumer tech companies often let small groups of customers try out unreleased products under strict secrecy to gather feedback during development…