There may be one 5" from Glyn: ADAM50-LCP-WVGA-NEW-BT815
But I only have the name from a newspost on their website.
They are strictly B2B so actually getting one would not be that easy as using one from Riverdi or Matrix Orbital.
And there are a few from Panasys:
http://www.panadisplay.com/ftdi-intelligent-display/But they have no distributor, just like Glyn, and are located in Shenzen.
I was able to buy the 9" and the 7" as samples from them.
But so far I did only try out the 9" and had a couple of issues with it.
In my opinion their PCB needs a revision, functionally and to reduce the size.
But it has been a couple of months since I received the displays.
The last display manufacturer I know of that has EVE products is Newhaven Display.
But they have no BT81x displays and stated last May in their forum: "We currently have no plans for the BT81x series EVE products."