As the other threads have suggested, probably not. That said, I was surprised not to see any reference in them to Anthony Beevor's claims. From The Second World War, chapter 49:
Well before Churchill’s fantasy of Unthinkable, a meeting of the Politburo in 1944 had decided to order the Stavka to plan for the invasion of France and Italy, as General Shtemenko later told Beria’s son. The Red Army offensive was to be combined with a seizure of power by the local Communist Parties. In addition, Shtemenko explained, ‘a landing in Norway was provided for, as well as the seizure of the Straits [with Denmark]. A substantial budget was allocated for the realisation of these plans. It was expected that the Americans would abandon a Europe fallen into chaos, while Britain and France would be paralysed by their colonial problems. The Soviet Union possessed 400 experienced divisions, ready to bound forward like tigers. It was calculated that the whole operation would take no more than a month… All these plans were aborted when Stalin learned from [Beria] that the Americans had the atom bomb and were putting it into mass production.’ Stalin apparently told Beria ‘that if Roosevelt had still been alive, we would have succeeded’.
While Beevor received a lot of attention a few years back for going through previously sealed archives and providing pretty good evidence that mass rapes and cannibalism occurred, this might be the most significant new claim he came up with in his entire work. It would imply that early nuclear deterrence had a much greater effect than previously believed, and it provides an outline for a much more solid basis of his other criticisms of Allied concessions at Yalta and Potsdam.
However, it's notable that while much of the rest of his work uses primary sources to support his arguments, this particular paragraph instead uses a fairly dubious secondary one: Beria, My Father, Sergio Beria's attempt to rehabilitate his father, the brutal NKVD chief Lavarentii Beria. While it does provide some interesting first hand accounts, many scholars have dismissed a number of the younger Beria's claims as outright fabrication, and this one probably falls into that category.
It's possible that there is indeed some written primary source material still sitting around in a Russian archive that might support this, but given that Beevor had largely unrestricted access for several years and knew exactly what he wanted to search for on this subject, the answer is that it probably doesn't exist. Thus, it's rather unlikely that detailed plans ever were drawn up to invade Western Europe.