I will bring you periodic updates on these seedpods as they unfold over the next few months.  I have no clue how big they get, or if the seed will be viable.  I can’t imagine how slowly the seedlings must grow if they are anything like the adult plant. Hoya manipurensis is the slowest growing Hoya that I have ever seen.  When the seedpods rupture, I will try to grow them in pure sphagnum moss as that is what seems to work best for me.