I tried utilizing the SidecarCar Beta 9 batch on the public Catalina release + iPad OS 13.1.2 on my iPad 5. There appears to be some glitches and the wireless mode doesn't work for me. @jackluke do you plan on releasing an updated patch? From the comments I read earlier, wireless Sidecar should work with the iPad 5 as it's hardware should support it. Thanks for all of your hard work!
iPad mini 4 , iPad Air 2 and iPad 5 can't work in wireless Sidecar because I guess they require the Wifi 802.11ac probably using a recent Mac with an embedded wifi ac could allow it to work.
The minimal video streaming glitches are side effects of lack of HEVC encoding/decoding GPU features from one or both the devices involved Catalina Mac and iPadOS device.
I have binary compared the latest SidecarCore (269 kb) and it looks very similar to the beta9 one, so for now using it will work.
And after overwritten the SidecarCore binary with the patched, anyone can re-enable SIP, booting from CMD+R and typing from a recovery Terminal: csrutil enable ; reboot