A release version has been created on Github. Release binaries will be added to http://credits-currency.org as soon as a full sync on a node on mainnet has been done. The sync on that node is currently on block 285000 on the bitcoin blockchain.
To upgrade to this version a full sync has to be done, or initialising from a prepackaged working dir. A reindex can NOT be done anymore. A prepackaged up to date working dir will be published at the same time as the binaries are published.
https://github.com/credits-currency/credits/tree/release-version-0.9.1.70
Please read the release notes carefully before upgrading and make sure to backup credits_wallet.dat and bitcoin_wallet.dat.
Expect the binaries for version 0.70 to be published in a day or two.
Does it mean I cannot use the existing working directory and have to sync from the beginning? That will take a long time.
If you want to upgrade, yes. I will however publish an up to date new working directory that you can download via torrent and do a quick initialisation from.