Yet, I can't really blame the host for dropping end-of-life software that isn't being patched anymore, in today's world where security is highly prioritized over features.
PHP 5.6 is officially supported until 31 December 2018https://en.wikipedia.org/wiki/PHP#Release_history
PHP 5.6 received a security patch just 5 days ago, September 13, 2018http://php.net/ChangeLog-5.php#5.6.38
Progress on UBB.threads support for PHP7 is definitely a work in progress.
As you're probably already aware, the current core software development, announcements and general how-to guides posted here, are being done by just one person, myself. Lots of support and additional code resources are being provided to me from Gizmo.
As I've written in the ShoutChat box last week, "It's really hard to make a plan for a release, because there isn't a team of developers available 40 hours a week. Sometimes we will have a lot of time to contribute and sometimes we'll have a really busy week."
7.6.2 is being released later today, in hopes of completing that round, and joining the battle for php7 once again