https://wccftech.com/next-general-nintendo-direct-to-air-on-august-28th-rumor/

A general Nintendo Direct is going to be aired right before the end of the month, according to a few reliable sources.

ResetERA forums members C. Tsubasa and NateDrake have been hinting in the past few days that the next Nintendo Direct will air on August 28th. They also hinted at a Nindies presentation for this week, which is indeed happening later today, before the official announcement.