In a way, yes. But in another way, no. There's a little bit of history between the brand names and how it's all come to be under just the EPOS name now, but the bottom line is that Sennheiser's gaming audio has been folded into EPOS now - and the pedigree remains there.
Sennheiser's gaming audio division became one with EPOS back in 2020, and this partnership, or blending, first went under the mantle of 'EPOS | Sennheiser'. This felt like softening the transition, so to speak, but now the brand is totally known as EPOS - and all new lines are under this name. Older Sennheiser products might still be available to purchase at retailers, or might have had a soft refresh with the EPOS name added, but the fact remains that the products still have that Sennheiser pedigree, but also have the forward-looking and modern approach of EPOS injected into them too.