You can use the new method to start any type of document Google Docs is capable of creating. Docs can be made by entering the domains doc.new, docs.new, or document.new; Sheets by entering sheet.new, sheets.new, or spreadsheet.new; Slides with slide.new, slides.new, deck.new, or presentation.new; Forms with form.new or forms.new; and Sites with site.new, sites.new, or website.new.
It's not exactly a seismic shift in how Google Docs works, but shaving seconds off the more tedious parts of your workflow can make the process feel that much smoother. The shortcuts aren't browser-dependent, and are live now.