Works and arrangements for piano duet and two pianos are published in the III. series of the New Liszt Edition.

A draft and the two-piano version of Schubert’s Wanderer Fantasy transcribed by Liszt have been published in the 1. volume of the recently launched III. series.

This volume comes complete with a detailed preface, several manuscript facsimiles, and a critical report. 

These series were launched within the New Liszt Edition so far:
Series I: Works for piano solo (18 volumes),
Series II: Free arrangements and transcriptions for piano solo (24 volumes),
Supplementary volumes for Series I and II (16 volumes),
Series III: Works and arrangements for piano duet and two pianos (1 volume so far),
Series IX: Vocal works with orchestra or with several instruments (1 volume so far).

Separate editions and practical versions supplement the New Liszt Edition.