A further refinement in 1983 with News B2.10 was a move to e-mail-compatible headers, to ease message transfers with the ARPAnet.
The hierarchical layout split the groups at the periods, reducing directory sizes and ameliorating the uniqueness problem.
B2.10 contained limited support for moderated newsgroups, with posters needing to manually mail in submissions to an intermediate party who would post articles on their behalf.
The last B News patch set was released in 1989, after which Rick Adams declared the product obsolete.
A rough version of the software was released and drew attention from around the network, but the project was abandoned shortly thereafter.