New module updates and infotainment versions appear quite regularly, certainly every few weeks to months. However, most dealers will only apply them outside routine servicing if there is a warranty claim for an issue (because then they are paid to do so by MG) or a recall (very rare).
Also, applying updates is fiddly and time consuming and sometimes fails, so some dealers will try to avoid doing them.
There is no sign of the long-promised over-the-air updates.
So the challenge is getting them. The first cars delivered in the UK are just coming up to their first annual service, so we will find up how much is getting updated soon.