For what it's worth, I was under the impression, until a couple of days ago, that SwissMicros had some interest in DB48X. Apparently, that is not (or no longer) the case.
If I understand their position correctly (but I'd rather let them speak for themselves if they want to), they are in the business of doing HP-compatible calculators, and to the extent that DB48X promises no such compatibility, they don't plan to use it.
The reason I am bringing that up here is that I may have conveyed the impression on this forum and elsewhere, based on earlier exchanges, that DB48X could one day be the software foundation for a SwissMicros RPL calculator. I am no longer so sure. I still hope to convince them, but ultimately, it's their business, and it's entirely their decision to make. In any case, I don't want to give false hope.
The good news is that it does not change the fact that DB48X does run on DM32 and DM42 today, and that is unlikely to change.
But that prompts me to ask the question in this thread: would you prefer
1) a fully-compatible HP48 clone, using e.g. Saturn emulation and HP ROMs, much like iOS or Android apps?
2) a source-compatible firmware that is simply in the spirit of the HP48, but takes full advantage of today's hardware, even if that means being unable to run anything that relies on SYSEVAL or Saturn assembly language?
3) a combo of 1 + 2, i.e. something that is modern, but still offers some backward compatibility mode or tools?
And just to share my personal preference, I'm working on option (2), not (1), though given a machine powerful enough (i.e. more in the smartphone-class in terms of CPU, Flash, RAM and connectivity than in the DM32-class), I'd probably later add emulation support and the ability to download ROMs in order to get (3).
(Meanwhile,
DB48X 0.5.1 is out)