I know the Connectcore SBC has an issue with the i2c bus conflict with the touchscreen and the sound chip with the 10WSVGA screen. DIGI was supposed to work on a solution. Did they fixed it?
The 10" WSVGA is intended to work with Connect core 6 kit. It does not work with Connect Core 6ul due to the i2c conflict you mention. There is a 7" LCD kit https://www.digi.com/products/models/cc-acc-lcd-70wv that is intended for cc6ul. There are no plans to modify the design of cc6ul SBC to make it work with 10" kit.