If it were up to me they will follow up with an ADOX CHS 25 II and an ADOX IR 820, but that is just me writing down my 2013 Christmas list already in
Now that the mighty Efke IR820 AURA is kaputt I'd kill to have anybody (ADOX or MACO/Rollei) take over it and improve. A proper IR film without anti-halatation ("aura") layer and consistent quality.
While a decent film the Rollei Infrared 400 is too harsh for my taste - too much "German precision thinking" I guess that takes away some of the artistic element while Efke Aura had it plenty (and a poor quality control as a side effect

).
The ex MACO IR820c AURA was also stunning film and was discontinued (I guess Efke took over the same recipe?). I also guess why they stopped is probably people complained about the light-leaks etc since the films without anti-halatation layer need to be taken care when loading into camera - it really needs good backing paper and MACO used white paper back then - not good idea (I often had paper numbers and sybols often reflected into film emulsion when developed even when I took care of loading)! I guess a solid pitch-black or deep gray Ilford SFX-like matte-paper would solve most of those issues with the "AURA" type IR films.
IMHO, when improved and when done right we could have "the next Kodak HIE" type of an artistically stunning IR film that differs day-and-night from any digital-IR tweaks that're gaining ground very fast. I've seen pretty close digital IR results to Rollei Infrared-like stuff, yet I've seen NOTHING close to the "AURA" IR films - light bounces around on film backing creating an interesting optical effect you just can't emulate in digital.
I'd gladly pay $7-10 per 120 roll for such an "Aura" film and buy bucketloads.
I hope ADOX reads this!