Not really. I took a look at kind of a cable Sennheiser bundles with each headphone from the website:

HD 559: 6.3 mm plug.

HD 560 S: 6.3 mm plug.

HD 569: 6.3 mm plug + 3.5 mm plug.

HD 579: 6.3 mm plug.

HD 599: 6.3 mm plug + 3.5 mm plug.

HD 600: 6.3 mm plug.

HD 650: 6.3 mm plug.

HD 660 S: 6.3 mm plug + 4.4 mm balanced.

HD 800 S: 6.3 mm plug + 4.4 mm balanced.

HD 820: 6.3 mm plug.

So really the 3.5 mm cables are an exception that are also bundled with Sennheiser's audiophile-tier headphones and absolutely everything has a 6.3 mm plug out of the box.