We've made a lot of progress towards converting to Plesk.
Our database which was over 18,000 users has been cleaned up, slimmed down, and restructured in preparation for the upcoming control panel switch. All of the existing archived accounts have been moved from archived state to backed up state. That means that all accounts are now available to download from https://www.heliohost.org/backup/ instead of just the active accounts. Some accounts backup links were changed in this process so if you have a link from a month ago it won't work anymore. If you need to download your backup you can just submit your email address and username again to get the new link. If you're having trouble downloading your backup let us know and we can help.
We've also been hard at work converting all of our internal admin tools to support Plesk. In most cases they have to be completely rewritten from the ground up which, as you might imagine, takes quite a bit of time. Some of the code we were using still was written in 2008 so this is a great opportunity to modernize our systems as well.
Currently we're still testing the account transfer process from cPanel to Plesk to make sure it works 100% correctly before we start using it on real accounts. We plan to start transferring real accounts, if everything goes well, as soon as this weekend. We'll keep you updated, and when your account is transferred we'll email you to let you know how to log in to Plesk.