Yes, a 5.6 update is planned.
I've unfortunately run into a... problem, which I'm not sure is on Me, or on Epic, so I've been kinda watching to see if a 5.6.1 was imminent.
Basically, when UHT generates the intermediate files for the Runtime part of HammUEr, the 5.6 UHT generates an empty file...
and then fails to compile because "nothing is defined."
Like, duh, you're trying to use an empty file, buddy.
An empty file you created, so I'm not sure what you expected to happen there...
There were no code changes, and the 5.5 intermediate files...
correctly reference the file where the classes are defined, so...
you see why I'm very confused right now.
I've tried a couple of things already, but it always goes wrong during compilation. There's a hack to "fix" it (by manually editing the intermediate files to point to the right source file)...
but I feel like that's not really something I can expect other people to also have to do on their machines if they want to build their game...
So...
tl;dr: Yes, 5.6 release will happen, hopefully Soon™, but I can't really promise when right now.
Sorry.