[NTG-context] Does or will bib module use ris format?

Hi Taco, I searched in mailing list and found that you had been considering using risx as the internal bib format? Did you do it in t-bib? And as I understand, you are writing a new bib module with Lua. What will the internal format of the new bib module be? I'm using RefDB, whose internal bib format is ris, and am thinking about combining RefDB with ConTeXt. Best wishes, Wei-Wei