UPDATE: USCIS completed the draw on July 31, 2023.
On July 27, 2023, USCIS announced that it will be conducting a second H-1B lottery for the 2024 fiscal year. The initial lottery was conducted in March 2023 and the number of applications exceeded the cap by several hundred thousand.
The filing period for those who were selected in the first round was April 1, 2023 through June 30, 2023. The fact that USCIS is conducting a second round suggests that of those selected, not all employers actually submitted an H-1B petition.
USCIS will make an announcement after the second round of lotteries are done. Those selected will have their registrations updated in their myUSCIS accounts.