https://www.dpreview.com/news/8756997638/sony-quietly-updates-the-a7r-iii-a7r-iv-with-improved-lcd-displays
Sony replaced the 1.44 LCD panels on the A7R III and IV with 2.36 ones and added an āaā to the model name, e.g., A7R IIIa. It appears to be the only real change. Speculation is they ran...