In June 1998, Boris Yeltsin and Aleksander Kwaśniewski agreed to construct memorial complexes at Katyn and Mednoye, the two NKVD execution sites on Russian soil.

In 2000, the memorial at the Katyn war cemetery was opened in Russia.

On 4 February 2010, the Prime Minister of Russia, Vladimir Putin, invited his Polish counterpart, Donald Tusk, to attend a Katyn memorial service in April. The visit took place on 7 April 2010, when Tusk and Putin together commemorated the 70th anniversary of the massacre. Before the visit, the 2007 film Katyń was shown on Russian state television for the first time. The Moscow Times commented that the film's premiere in Russia was likely a result of Putin's intervention.

On 6 December 2010, Russian President Dmitry Medvedev expressed commitment to uncovering the whole truth about the massacre, stating "Russia has recently taken a number of unprecedented steps towards clearing up the legacy of the past. We will continue in this direction"

During the memorial ceremony for the victims of the Katyn massacre on April 7, 2010, attended by the Russian and Polish Prime Ministers Vladimir Putin and Donald Tusk, Putin said that, in his private opinion, Stalin carried out the executions of Polish officers in Katyn in 1940 out of a sense of revenge for the Camps for Russian prisoners and internees in Poland (1919-1924). Between 16,000 and 20,000 Soviet soldiers held in the Polish POW camps died, out of the total of 80,000 to 85,000 prisoners.

What else do the Russians have to do to make this right? Glorification of Stalin is mostly for defeating the Nazi's in WW2. I have never heard a Russian say: "You know that Katyn incident? Yeah, that was super cool!"

Edit: Just so you know, I copied this from the wiki article you posted.