Today, Monday 17 October 2022, a meeting packet regarding the upcoming meeting on 19 October of the Los Angeles Board of City Tourism Commissioners was published: https://ens.lacity.org/lacc/laccdcagendas/lacclaccdcagendas250165914_10192022.pdf
These meetings are held twice a month and deal with budgets, reports, updates regarding LA tourism, marketing the city, and convention center business and operations, among other things. The current report features some information regarding E3 2024 and E3 2025. Page 32 shows that the Entertainment Software Association on October 6 2022 booked E3 for the next two consecutive years at LACC, to start on June 11 and June 3 respectively. Show attendees are expected at 68,400.
Pages 47 and 48 deal with more with financials/budget for rent, electrical, AV etc.. Note that only E3 2024, marked with status Prospect, is listed here.
For information on E3 2023 and what to expect, you can read Christopher Dring's article from September 26: https://www.gamesindustry.biz/e3-2023-whats-the-latest