https://wccftech.com/halo-reach-pc-flight-extended/

The current and final Halo Reach PC flight has been extended by at least one week, developer 343 Industries has announced.

The Reach PC flight kicked off last week and was intended to end yesterday but the final flight has now been extended to investigate several issues that have been reported by those participating in the flight last week. 343 Industries mentions that the flight might eventually end up running longer than another week.