RTPMIDI isnt a new thing, being baked into recent versions of OS X and an easy addition via the excellent RTPMIDI by Tobias Erichsen. But it offers the abillity to send and recieve MIDI over standard ethernet networks and Wifi - and can be jolly useful, especially when MIDI din or USB cant get there easily.
iConnectivity have been offering this as part of their MIDI interfaces since the iConnectivity 4+, at least on a basic level. But now they've written it into their own software, and added GUI to it via their recently redesigned iConfig control panel.
With the iConnectivity Mio4 and Mio10 which are MIDI only routers, you get ethernet connections allowing a standard ethernet router to carry the MIDI data over way longer distances than the usual MIDI din or USB routes.
Devices self announce on the network, and have auto naming (device + serial number) and also have four discrete MIDI ports per ethernet connection. As Rodney Orpheus explains in the video, its fast becoming a solution for moving MIDI data around large stage setups, incorporating with their PlayAudio playback failover systems which are also proving popular with pro touring acts.
There are other solutions of course, but the simplicity of the way iConnectivity has approached it makes it easy to integrate into a system. Additionally, devices can save their last state meaning you don't have to configure it each time you power up. No need either for a computer to be involved once you have saved that state.