This amazing film footage of Prokofiev plopped into my in-box from Marc-Andre Hamelin, who tells me it's been doing the rounds of pianists' emails for a while. He has also kindly forwarded this translation of the Russian, which was sent to him by Dmitry Rachmanov:
Prokofiev is being asked: "Sergei Sergeevich, maybe you will tell our viewers about your work?"
He replies: "Well, right now I am working on a symphonic suite of waltzes, which will include three waltzes from Cinderella, two waltzes from the War and Peace, and one waltz from the movie score "Lermontov." [The War and Peace] has just been brilliantly produced in Leningrad, where the composer Cheshko (?) made an especially noteworthy appearance as a tenor, giving a superb performance in the role of Pierre Bezukhoff. Besides this suite, I am working on a sonata for violin and piano [no.1 in f minor], upon completion of which I will resume work on the sixth symphony, which I had started last year. I have just completed three suites from the Cinderella ballet and I am now turning the score over to copyists for writing the parts, so that most likely the suites will already be performed at the beginning of the fall season."