Please note that we have not yet tested the current RemotePi Board line with the new Rapberry Pi 4 Model B, we will be doing testing in the near future.
Apart from using a different power connector (USB-C instead of Micro USB), we expect that the current RemotePi Board will not work without issues, due to the increased current demand of 3A vs. 2.5A for the Raspberry Pi 3B+.
Please check back here for updates.
Update 16 July 2019
Our lab testing confirms, what some users already have found out, the RemotePi Board for Pi 3B(+) works with the new Raspberry Pi 4B, but only if there are no additional power drawing peripherials connected (i.e. ext. HDD, etc). The official max. current requirement for the Pi 4B is 3A instead of the 2.5A of the Pi 3B(+), therefore using the RemotePi Board for Pi 3B(+) with the Pi 4B may result in undervoltage warnings under high-load conditions with other devices connected to the USB ports.
We are considering to release an updated version of the RemotePi Board for the Pi 4B with a USB-C connector and max. 3A output, but should we decide to do this, it will likely not happen before Q4 2019. Please check our website for updates.