The NEW category in the ChannelStore has been replaced with New & Notables. The New&Notables category does not include all the new channels.
Roku’s OFFICIAL post about the New&Notable category:
… categories in the Channel Store change from time to time. This is an editorial collection & does not include all new channels.
But, some Roku viewers did like seeing ALL channels by release date.
We will continue with our New on Roku listings sorted by release date:
ALL the NEW Channels – by Release Date