Custom roms for the Quantum will come whenever the module reloc tools are finished and ready. Until then, there are no custom rom (if there could be, I would be building for quantum).
Microsoft Student Insider
and rom developer for Asus Mypal A6x6 (and again Axim X50)
My work is free for everyone's use, but if you wish to give a donation towards my work (I am a full-time college student working on this in what little spare time I have), you may do so.
Check out my blog for news on mobile Windows and other tech: Catholic Tech Geek
Students, check out Dreamspark
for the tools you need
if you want a challenge