The update carries version number MIUI 188.8.131.52.QCMINXM and has a download size of around 1.6GB. As mentioned before, the roll-out is happening in a phased manner. However, you can manually check for the new OS by going to Settings > About Phone > System Update.
Talking of Redmi 7A's specifications and features, the handset sports a conventional display with thick bezels on the top and bottom and a single rear camera. It misses out on a physical fingerprint scanner.
Further, the smartphone bears a 5.45-inch HD+ (720x1440 pixels) LCD screen with an aspect ratio of 18:9 and a pixel density of 295ppi.
The Redmi 7A sports a single rear 12MP (f/2.2) camera with an LED flash. For selfies, it offers a 5MP (f/2.2) front camera. Moreover, both the rear and front cameras can record videos in Full-HD resolution at 30fps.