Still very popular. The 7th edition was a major update that added more theoretical material and a dictionary.
Looking for "GDZ" (Home Assignment Solutions) for the is a common rite of passage for students. This "Green Book" (or sometimes yellow) is a staple in Russian schools because it drills grammar until it’s automatic. The Legend of the Editions gdz po angliiskomu golitsynskii sbornik uprazhnenii, izdanie
This is the current standard. It often comes as a set including both the Sbornik Uprazhnenii (Exercise Book) and the Klyuchi (Key/Answers) . Still very popular
Since the numbering varies, you need to match your book's edition to the correct solution list. gdz po angliiskomu golitsynskii sbornik uprazhnenii, izdanie