
Marie E. answered 08/17/20
Bible Studies Help: In-Depth Insights Developed Over Three Decades
First of all, congratulations- - getting published is a major career milestone and an achievement worth celebrating!
In answer to your question, yes, you should certainly feel comfortable listing your upcoming publication in a short story cover letter, as you have a signed contract in your possession. The way you worded your credit is absolutely valid: "I have been published in X anthology and have an upcoming piece in Y magazine." If it would make you feel more comfortable to be more specific, you could certainly say, "I am honored to have been published in X anthology and am pleased to have a piece under contract with Y magazine as well.'
The fact of the matter is that you are in no way trying to deceive anyone, nor are you operating under false pretenses: your work has been published in an anthology and another organization has given you a legal document confirming their plans to publish your short story. It's all good.
Here's to your continued success!