When running the B84 GF installer I bootstrapped UC from the command line by running the "pkg" wrapper script. It looks old, because it refers to wikis.sun.com:
Also, the Java client appears to be pretty old too because:
1) It is slower than the B56 client. The GF4.0 bootstrap of pkg took over a minute for me, but with UC B56 it took less than 40s.
2) B56 has much improved progress feedback.
So it looks like we are using an old wrapper script for "pkg" (and I assume "updatetool") and the Java client is old too.
FYI, I checked the GF 3.1.2 GF installer, and it appears to be using the B56 version (it has the correct URL and download is fast) – so this looks like a regression.