Yes, looks as though it has just been released.

Neither of my tablets’ serial numbers (or machineid values, or whatever they use to “approve” which tablets can and cannot download it) are able to download this version.

If anybody is able to get it, can you share the full filename of the xxx.signed file? This page explains how I “sniff” the process to get the filenames, at least when my tablets are allowed to get the updates.

In that case, now is the time for me to pause beta updates and wait for DDVK hack for 3.8