How are bond ETFs taxed

Taxation
1

I know the coupon/interest of bond is taxed at slab rate, but what if I sell the bond at a higher value or if I dont get dividends, but value increases like EBBETF0433 bond which has around 7.5% ytm.
Some websites are saying its capital gain, some are saying after march 2026, its slab rate.

Thank you

2

It’s capital gain, but taxed at slab under section 50AA