Upon the final release of Burning Board 4.1, customers may purchase an upgrade to gain access to that version.
Upgrading from Burning Board 4.0Existing licenses for Burning Board 4.0 can be upgraded for USD 44.99* (EUR 39.99**) to gain access to Burning Board 4.1.
Upgrading from Burning Board 3.1Existing licenses for Burning Board 3.1 can be upgraded for USD 69.99* (EUR 59.99**) to gain access to Burning Board 4.1.
Upgrading from Burning Board 3.0 or olderAll other licenses (Burning Board 3.0 or older) are not valid for the reduced upgrade fee, but can be upgraded for the full price of USD 89.99* (EUR 79.99**) to gain access to Burning Board 4.1.
* Prices without VAT
** Prices with 19% VAT for Germany
Quelle: https://community.woltlab.com/thread/233332-…board-licenses/