Wondering if anyone knows if new haven ever put out a stainless 280, either in classic stainless or classic featherweight variety? Thinking hard about a blue variety but really much prefer a stainless if they exist...thanks!

In a word, no. Not regular production anyhow.

I have seen examples from the custom shop pop up now and again though.

The blue classics are hard to come by as well they only chambered them in the classics for a couple yrs if that.