Analytic Combinatorics in Several Variables
I am a longterm organizer of the analytic combinatorics in several variables project and maintain its website, acsvproject.com. Currently I am under contract to publish two textbooks on this topic.

An Invitation to Analytic Combinatorics: From One to Several Variables
S. Melczer
Springer Texts & Monographs in Symbolic Computation
Undergoing editing, expected late 2020 or 2021
The submitted manuscript is available on the book webpage 
Analytic Combinatorics in Several Variables, 2nd Edition
R. Pemantle, M. C. Wilson and S. Melczer
Cambridge Studies in Advanced Mathematics
Expected late 2021 or 2022
The first book is an introductory treatment of this material, suitable for students, while the second is a more advanced treatment making extensive use of homology, multivariate residues, and similar constructions.
Upcoming Events
AMS Math Research Community (Spring 2021)
I'm coorganizing an MRC, Combinatorial Applications of Computational Geometry and Algebraic Topology, aimed at introducing young researchers (between 2 and +5 years post PhD) in computational algebra, combinatorics, analysis, or algebraic topology to new research directions in enumerative combinatorics. [Delayed from 2020 due to the coronavirus]
2020 Conferences
All 2020 conferences are currently canceled or delayed due to the coronavirus.
Coauthors
Yuliy Baryshnikov, Alin Bostan, Mireille BousquetMélou, Sophie Burrill, Erin Compaan, Julien Courtiel, Éric Fusy, Kevin Hyun, Veronika Irvine, Manuel Kauers, Jessica Khera, Erik Lundberg, Marcus Michelen, Marni Mishna, Somabha Mukherjee, Greta Panova, Robin Pemantle, Kilian Raschel, Frank Ruskey, Bruno Salvy, Éric Schost, Catherine StPierre, Armin Straub, Mark Wilson