The Naida Infinio lineup should be released soon, but I don’t know for sure when.
You can always try the Infinio R (non-Sphere) and then Infinio Sphere with UP receivers.
It’s a bit taking a small risk, because UP receivers are fitted only with cShells, for which you have to pay, but it is worth considering.
Regarding wax, newest Phonak SDS 6.0 UP receivers are with HE3 waxguard, which is much larger than Cerustop.
See that PDF, page 25:
Or here:
Phonak Infinio HA has great battery life. With my Sphere, if I am not constantly in noise over 70-72 dB, I can use it even for 30-40 hours continuously.