Amazfit is currently busy sending out the second major update for its latest smartwatches - the GTR 3 Pro, GTR 3, and GTS 3. These were unveiled together back in October, and now they're in the process of receiving the latest software goodies. In the case of the GTR 3 Pro, the new build which is currently rolling out is labeled 8.26.3.1, and this brings with it a GoPro mini app in the Zepp app store, the addition of a background app status indicator on watch faces, the addition of a screen lock function in the control center, manual altitude calibration, as well as the usual improvements...
Source: https://www.gsmarena.com/amazfit_gtr_3_gtr_3_pro_and_gts_3_get_second_major_update-news-52387.php