Tor.com - Advance Warning of Call for Novella Submissions

Tor.com will be opening for novella ( 20,000 to 40,000 words) submissions on May 1, 2018 in the genres of science fiction and fantasy.  The submissions period will close on May 15, 2018, so it is a very short window for submitting.  Payment is an advance against royalties or royalty only - your choice.  You can find the details here, just scroll down the page.