The TSW (www.w0eb.com/Page2.html) group has confirmed that both our "Raduino Clone" board and the BITeensio board kits will work fine with the new uBITX Version 5 rigs.
The Factory V5.1 Raduino firmware from GitHub works in the NANO on our "Clone" board installed in a V5 uBITX just like it does in a factory supplied Raduino and we are very close to releasing firmware for the BITeensio that will run on both the legacy (V3/V4) uBITX and the new V5 uBITX boards as well simply by selecting VL (legacy) or V5 in the calibration menu. The default will be V5 but to use it in one of the "Legacy" rigs, select VL and calibrate it. The VL calibration info is saved separately from the V5 info and once you have the BITeensio calibrated for both versions you can swap it between the two uBITX types simply by selecting VL or V5 in the Calibration menu.
(If you install the BITeensio in a different V5 or VL uBITX than it was originally calibrated in, you may have to touch up the calibration.)
Beta source code usable with both the 2.8" and 3.2" color displays will be posted in the TSW website's file directories sometime in the next several days as soon as the operating instruction manuals are revised. The same version will work for both displays with the addition of one wire on the 2.8" display only. On the 2.8' the T_IRQ pin needs to connect to D17 on the Teensy 3.6.
Jim, W0EB
Jim Sheldon