There has been a significant amount of discussion in the past on this list about the relationship between the two major Rust implementations of Apache Arrow (arrow-rs and arrow2).
Recently, the communities seem to be aligning on a path towards unification, and I wanted to make sure anyone on the mailing list who was interested had a chance to participate in the conversation [1]. The path appears to involve bringing arrow2 into the ASF (via the standard IP clearance process) and then unifying with arrow-rs with a straightforward migration path for most users. Andrew [1] https://github.com/apache/arrow-rs/issues/1176