The Beoplay Eleven is LITERALLY the Beoplay EX. Same case and buds, same drivers, same codec and same dated Bluetooth 5.2 connectivity.
The only thing that's "changed" is something that was terrible to begin with, the ANC and transparency. They doubled the strength, but when it was non-existent to begin with, then that's not really saying much.
Bang & Olufsen's latest premium pair of earbuds are the Beoplay Eleven, which it claims surpasses the Beoplay Ex in terms of noise cancellation and transparency. The earbuds also have replaceable batteries to align with EU regulations.