There are many indications that M1A1 / M1A2 tanks will dominate in "heavy" units. Due to terrain conditions, the units in the north-east and south-east will be gradually equipped with K2 family tanks, the production of which will hopefully be transferred to Poland, and this will be the main tank of the Polish army.
The Leopard 2A5 and Leopard 2PL will slowly replace the remaining T-72/PT-91 family vehicles (e.g. in the 34th Armored Cavalry Brigade) in western Poland. This is how it was supposed to look like until recently, but unfortunately a lot will depend on politics.