Just finished testing 1 XL330-M077 and 1 XL330-M288 with this TASK code.
Pretty much standard programming, except you’ll have to use the XM-XH DXL commands and NOT the XL DXL commands (meant for XL320 only, I think).
The XL330s worked fine with this Combo 904-C + 485-EXP, and I made sure to use a 5V Power Supply on the 485-EXP barrel input connector.
The XL330s are using screws and the hole pattern seems to jive with the 6 mm rivet system, but I don’t think that the current DREAM/MINI frame parts will work with the XL330s. So who knows, may be a new robotics system based on the XL330s may be coming out later in 2021? And maybe a new version of OpenCM-904 with more memory so that MicroPython can be run on it?