I was surprised when I wanted to tag my question with nikon-d850 as there isn't any such tag. But there is a d800 tag. Is it reasonable to expect a d850 tag, for a camera that came out in 2017? Or is the lack of a tag indicative of the need for one?

I'm new to the photography stack exchange and would like to participate in the Photo of the Week contest. However, I'm also new to photography and only recently got a DSLR camera so I haven't taken many photos with it. Is it okay if I submit some photos I've taken using my phone until I have more...