The 2024 version of the D&D core rules will be included in an expanded version of the System Reference Document, and available to third parties via Creative Commons (though there is no mention of thr Open Gaming License). The new SRD 5.2 will be available early 2025 after the new Monster Manual has been released.
The new SRD will be localized in the languages which WotC supports.
Regarding the long-awaited SRDs for previous editions, WotC says that they will start reviewing those documents once the 2024 rulebooks are out.