Yesterday the new Gridcoin version 5.4.0.0 was released and it is a mandatory upgrade. By August 31, all nodes should update to prevent a fork from the main network. So today I updated the node of Gridcoin.ch. Gridcoinstats.eu has also already been updated by its maintainer.
In the last 24 hours, 145 blocks have already been staked by 5.4.0.0 nodes. So already 15% of all blocks are generated by updated nodes!