There is no current timetable for UBB.threads v8. Your current UBB.threads version will work fine on PHP7.
As mentioned on
your thread at UBBCentral:
In development we're testing against MariaDB v10.4.27 but it should work just fine on the latest MariaDB LTS (currently 10.6, all of this is equivalent to MySQL8). We do not test against release candidates or alpha/beta releases.
You will want to run on the latest PHP7 build available to you until UBB.threads v8 is released. The newer the build the faster PHP scripts will process.
