There are no plans to release official ports to anything other than x86 Windows.
NeoLemmix is known to run well under WINE on Linux, assuming x86 hardware (ie. an Intel or AMD CPU), but apparently not so well on Intel Macs. Most Android devices are ARM based, and I'm not aware of any emulator with high enough performance to run a compatible version of Windows along with NL. Windows ARM devices like Surface Go do have x86 emulation, but I don't have any feedback so far as to how well NeoLemmix runs on them.