Can I pre-order Flint 3 somehow?
No, you can sign up to receive updates though
https://www.gl-inet.com/products/gl-be9300/?utm_source=website&utm_medium=menubar&_gl=11ihn90m_gcl_awR0NMLjE3NDY2MDc3ODAuQ2p3S0NBandpZXpBQmhCWkVpd0FFYlRQR0lKWUxDTHBINVNDQU44WlBUYWVtejU2a3M4VjJjeU5qV1dmWVBOZGxMTXZNNlpuT0F1QWN4b0NhR0VRQXZEX0J3RQ.._gcl_auNjQ1MzI0NzEuMTc0NjYwNzc4MA.._gaMTgzOTY4Mzg5MC4xNzQ2NjA3Nzgw_ga_34T6Q5NL0V*czE3NDY5MTQxMzEkbzI2JGcxJHQxNzQ2OTE0MTgzJGowJGwwJGgw