No: R32 is not banned as a refrigerant. From 1 January 2027, it can no longer be used in self-contained appliances up to 50 kW or split air-to-water heat pumps of 12 kW or less placed on the market, because its GWP of 675 exceeds the threshold of 150. It remains permitted in split air-to-air air conditioners until the end of 2028, in splits above 12 kW until the end of 2032, and with no time limit for servicing existing appliances.
Read the source article: F-gas regulation 2027 bans: which air conditioners and heat pumps?