Patch notes are all here. I think you're getting something confused. AFAIK there's never been any mention of asterisks in macro syntax in any of the patches or hotfixes. The <wait.#> syntax was added in 2.16 (but the page for those notes is formatted incorrectly so the <wait.#> doesn't show up where it should in the notes; you have to view source on that page to see what it was meant to say), but that's been the only change with /wait since 2.0.