The possibility it's accurate seems remote, to me, unless there are corroborating reports from other sources about what is being claimed.
The president addressed this early in the story's news cycle, so I guess I'm seeing it as public record of the highest possible source, in this case, against a single alleged report (the screenshot you found appears sourced from the Today show), made at a time that isn't clear (before or after the president's remarks) and corrected - when?
This report from the AP, which is consistent with other reporting, doesn't give an indication the family believed Whelan was offered for release, or that he will be released anytime soon.
https://apnews.com/article/brittney...nment-russia-bbf0c7e3029fea40d604b11fd271533f