In what may be wishful thinking, Best Buy's brand Insignia is selling a screen protector for an unreleased "iPhone SE Plus" on its website hours prior to the "Time Flies" Apple Event.
Apple is not expected to announce any iPhones at the Time Flies event, yet Best Buy has listed an "iPhone SE Plus" screen protector in its store. The larger iPhone SE has been rumored by Ming-Chi Kuo in the past, though he has estimated an early 2021 release.
The listing is under a Best Buy house brand called Insignia, and lists the product as the "Glass Screen Protector for iPhone SE Plus 2020- Clear." The product name does not match the compatibility list though, as it lists the iPhone 8 Plus, iPhone 7 Plus, and iPhone 6 Plus.
Best Buy has been producing screen protectors for this size iPhone for a half a decade, since prior to the iPhone 6 Plus device's release.
When it is ultimately released, Apple's "iPhone SE Plus" is expected to have the same body style as the iPhone 8 Plus. Case and accessory makers release products for unreleased Apple devices like this to try and be the first to market in case of a release.