This, AFAIK, is the first video to have emerged, showing the upgraded MiG-29 fighter aircraft of the Indian Air Force [IAF], now christened MiG-29UPG, in flight. This clip, released yesterday, was shot at the MAKS 2011 airshow held last year in Russia, where the aircraft was displayed.
The entire fleet of IAF's MiG-29 aircrafts are to undergo a Mid-Life Upgrade [MLU], incorporating advanced avionics, an advanced variant [Phazotron Zhuk-ME] of its existing radar, along with the ability to fire newer weapons, among others. Maintenance process of the aircraft too is being revamped, transitioning to the On-Condition Maintenance programme. Up to six aircrafts would be upgraded in Russia, while work on the rest would be performed by the Hindustan Aeronautics Limited [HAL] in India itself.
The aircraft is also to be fitted with an improved version of its current RD-33 engine, a series 3, as part of the MLU. India has signed a license agreement with Russia to build them locally in India.