and Improved Kilo subs (Project 636) since 1996 https://en.wikipedia.org/wiki/Kilo-class_submarine#Project_636_units
In 2012 Russia also 10 year leased one Akula II SSN (known as INS Chakra) to India https://en.wikipedia.org/wiki/Russian_submarine_Nerpa_(K-152)
Due to a limited submarine defense budget Russia has spent more on nuclear submarine development and production (new Yasen "Multipurpose", Borey/Borei SSBNs and updated Akula SSNs, Delta SSBNs and Oscar SSGNs) with insufficient money to develop AIP for conventional diesel-electric subs.
Thus Russia has been unable to develop and market AIP submarines which it hoped to sell under marketing names of Project Amur https://en.wikipedia.org/wiki/Amur-class_submarine and Kalina https://en.wikipedia.org/wiki/Project_Kalina
This is a good summary https://en.wikipedia.org/wiki/Future_of_the_Russian_Navy#Submarines
What Russia has announced as Project Haski or Husky may only produce new nuclear multipurpose and SSBNs in the 2040s or later.