Why has the GFS forecast interval suddenly become longer?

[除夕月]

I just noticed that after updating to the latest version, the GFS forecast changes to a 6‑hour interval beyond day 7. In the previous version, the forecast interval after day 7 was still 3 hours.

[Suty]

@除夕月 Yes, since the predictability is really difficult in these longer time periods, we decided to offer this shorter and easier overview of these 8+ days.