if there is someone who knows for sure, could you please confirm if i understand it correctly :
POS coin wont have upper limit as BITCOin or litecoin and will in fact infinitely grow in quantity over time? like USD...
No one knows for sure because one company controls the coin and is acting in a very schizophrenic fashion with many last minute changes. From the way it looks their will be no hard limit on total supply if they survive but I suspect there will be a limit dictated by a bankruptcy or closure.