The Hungary LEGO Brand Retail Store Calendar 2019 has revealed the May 4th special promotional set! It will be available with LEGO Star Wars purchases above 14,999 Hungarian Forints during the promotional period of May 1-31.
If you are living in North America, the promotion will most likely be around May 4-5 and the gift will be free with $75 LEGO Star Wars purchases.
The set is known as 40333 Battle of Hoth 20th Anniversary Edition LEGO Star Wars set. It contains 2 micro Snowspeeders, shield generator and an AT-AT. (via Brickset)
LEGO Star Wars 40333 Battle of Hoth (20th Anniversary Edition)