Yes, finally, after months of development and beating on it with hammers, Dogecoin Core 1.10 is out now:
BACK UP YOUR WALLET BEFORE YOU UPGRADE.
We've had zero problems with upgrades so far, but still, just to be safe.
You will have to reindex on first run of Dogecoin Core 1.10, which will take 2-3 hours. I suggest running it overnight. If you use the QT (graphical) client, it will prompt you to reindex. If you run the daemon, use the "-reindex" option when you launch to start the reindex process. Again, this only has to be done once while the index format is updated to add more sanity checks. Your wallet balance will reflect the blocks that have been reindexed, while the process runs, don't panic. Do not attempt to send coins while the reindex runs, however, or you may find you've sent invalid transactions.
This is a major update and a critical security update. If you use Dogecoin Core, you MUST update to 1.10 to remain secure. If you for whatever reason absolutely cannot update (i.e. cannot take a service down to reindex) you can use Dogecoin Core 1.8.3, which contains the most critical fixes:
Even then, we highly recommend updating later if at all possible.
This release includes all of the changes in Bitcoin Core 0.9 and 0.10, including a huge speed boost to download/sync, a broad range of security fixes, and the framework for future improvements such as blockchain trimming and smart contracts (yes, you read that right, smart contracts).
If you're an individual user please update NOW. If you're a merchant, exchange, payment processor or service provider, please test and update as soon as possible. If you're a miner, please update after the 17th so we have time for the new client to be deployed. This update introduces version 3 blocks (BIP 66 for those who know what that is), which are part of the security fixes, and the more clients update before they're mined, the easier the rollout will be.
To re-iterate - seriously, you need to update. This client has been in testing for literal months, it's stable, there isn't another update just around the corner, get this one.
Lastly, for anyone who wants to run a Dogeparty wallet server (mostly this means reddit/u/coinwarp ), there's a modified version of 1.10 with extensions to support Dogeparty wallets. Unless you need this version (i.e. someone tells you you need it), just get 1.10 from above instead. If you do need it, it's at