One of the main features of the new Su-30SM2 is an improved set of avionics, which can significantly increase the range of detection and identification of air targets, which is especially important in modern military conflicts, where it is important to quickly respond to threats from the air. In addition, new high-precision weapons have been introduced into the armament of fighter jets to destroy air, ground and sea targets.
Testing of an aircraft with the AL-41F-1S engine, which is also installed on the Su-35S fighter and is used on the Su-57 as the first stage engine, is currently ongoing. It was previously reported that tests of the Su-30SM with this engine should take place in 2023; in total, by December the aircraft was supposed to perform more than 150 test flights.
This is as if implying the current SM-2 is still using the older AL-31FP variant instead. Also mention of Al41F1S looks sus as Su-57 is using Izdeliye-117 which an interim engine that have differences than the 117S which used in Su-35S.