In short, yes. The Soviet Union intended to keep at least part of Polish territory, and the officers massacred at Katyn would have been a significant part of Polish resistance to that plan.

Katyn was not the first such massacre -- in 1937, the NKVD carried out Order 00447, in which "anti-Soviet" (nationalist) elements were shot in the thousands. In 1937-1938, the NKVD's Polish operation resulted in the murder over 100,000 ethnic Poles in the Soviet Union for being "spies". A "spy" needed only to be one of the following: an "active" members of the Polish minority in Soviet Union, an immigrants from Poland, a political refugees from Poland (mostly members of the Communist Party of Poland), a former and present members of the Polish Socialist Party and other non-communist Polish political parties or a prisoners of war from the Polish-Soviet war that remained in the Soviet Union. As one can imagine, this devolved into executing anyone who seemed like they might be Polish. In Bloodlands: Europe Between Hitler and Stalin, Timothy Snyder mentions that in some cases, going to church on Christmas was enough to prove you were Polish -- Poles tended to be Catholic, and celebrated on Christmas, while Eastern Orthodox Christians (Russians, Ukrainians) celebrate on Epiphany.

Those executed were almost exclusively men; their wives and families were deported to Kazakhstan without food, supplies, or money, and frequently perished as well, so the death toll was actually >200,000. Similar -- if less severe -- national actions occurred against other Soviet ethnic minorities.

The children of Poles that survived were placed in Soviet schools, as that was frequently the only way they'd be fed. Therefore, they were indoctrinated by the Soviets and isolated from their heritage (as at least one, possibly both parents were dead and they were in Kazakhstan) -- making it much less likely they would rebel against the Soviet Union when they grew up.

Since nationalists -- like the officers at Katyn -- that resided in Soviet states had already been eliminated; it made sense for Stalin to do the same in his newly acquired Polish territories.

Source: Bloodlands (Timothy Snyder)