Does anybody knows when the extra parts will be available in Europe (Poland) - like extra props and service parts?

Hi there, the propellers have been available for Mavic Air, link: https://store.dji.com/product/mavic-air-propellers
And you can check which part you needed on this link. For those that are not available at the moment, I also don't have the relative news about when it will be in stock, maybe you can set an in-stock reminding, the email will be sent when they are available. Thank you for your support.

Thanks Thor! Will all those parts be available for all Europe? including Poland? or is it like US only type of deal?

Please change the country first, the accessories that are on the page should be available, and when they are in stock, you can order them.