I sync the new wallet, but see the zero balance for my bounty address.
It was paid. Did you create or import the address 13UCyZt5cg3E1iiPinhcMKUH7sr1sCyhon already? (Is it listed in the receiving addresses when you click "File ... Receiving addresses" ?) Did you sync past block number 2265? Either way, the current version still has the problems and it is not fixed yet. So patience until the release of the new version please.
When we can see first exchange? Maybe cryptopia or something?
P.S. how much coins we need for staking? 1000?
First exchange would come after the fixed wallet has been released. There's no minimum amount for staking. A really low amount will let you attempt to stake. This will work better with the fixed wallet however.
I think the wallet is sync to the date and the address is imported by the private key.
I will wait for the new wallet to see what will happen.