Thanks to the work of ERP5 developers, 5.4.5 Release has been made on the 12th of January.
This release mostly correct bugs of the previous one.
We didn't wait much longer in TioLive to upgrade our delivery system and since yesterday, TioLive is delivering instances of ERP5 5.4.5.
We are preparing the upgrade of the already installed and used instances. This upgrade should begin within the week and be over for the beginning of next week.
If you want more information about the new release, please read release note on ERP5 website.