If you are looking for the absolute "newest" material from the duo as of , they have recently released several EPs for their 50 Anos: Pedaço de Minha Vida project: Matogrosso e Mathias lançam EP do Zona Rural 2 - ONErpm
Zona Rural 2, Ep. 03 (Ao Vivo), Matogrosso & Mathias - Qobuz matogrosso e mathias zona rural 2 download new
It focuses on modão (traditional sertanejo) with modern production, perfect for road trips or rural gatherings. If you are looking for the absolute "newest"