If your YouTube homepage is showing videos in a list view (instead of a grid) this is not an intentional change and we're working to fix it! Thanks for all of your reports, and we'll share another update when the issue is resolved.
Thank Heavens & Hell. Also please for the love of our eyes and efficiency, bring the Recommended Feed into the side menu beneath the Subscriptions link and make it an infinite scroll tile catalogue like the Subscriptions page as a view setting choice at the very least. thx4urwork