In April 2023, Belarus announced that they will start the process for the development of a demo version to support early probing into the viability of CBDCs. By the end of 2023, after discussions and consultations, decision on the feasibility of implementing digital ruble is to be taken.
Source:
https://www.belta.by/amp/economics/view/budet-li-v-belarusi-tsifrovoj-rubl-natsbank-rasskazal-o-perspektivah-562154-2023/