Thanks to French fansite SimCookie, we now have another listing for The Sims 4 Game Bundle #3 by French retailer Micromania. The listing does not carry a description for the bundle as SmythsToys did, but they do list the release date as May 26th, 2016.
As always, without official announcements or information by The Sims Team, please note that release dates on retailer listings may be incorrect or change without notice.