Nice adds will be curious how they perform.
At least 1x RDU - MIA and MIA - RDU frequency seem designed for continuing on to South America via LATAM while the other RDU - MIA and v.v. frequency looks more aimed at O&D. I'll be interested to see how these do, especially the RDU - MIA.
RDU in particular is an interesting one because the difference between RDU - MIA - South America vs. RDU - ATL - South America is marginal but the ATL option still provides DL metal the whole way which I bet is going to be the preferred option for most medallions (including me).