Not sure how I missed posting the latest update for last month, but here is MAME 0.245.
No new updates for the CoCo, Dragon or MC-10 drivers in MAME that I could find for this release. Either way, it’s new and available.
When updating your CoCo-Pi, please make sure to select “Update CoCo-Pi from git repo” and “Run CoCo-Pi fix script” in order for all the changes to be applied. Install the latest MAME package (from the same menu). Select mame-0.245-1 as the default version.