wow, I am extremely impressed with the signal fix. In a massive science building where I work, I barely registered a 3G signal at all, I am now getting a full signal with testmyiphone reporting just over 300 kbps (mind you, at home, I see >1.2mbps...but this is certainly an improvement over defaulting back to EDGE).
Contacts are definitely snappy...before, after a full reboot, the initial load would always take a while before I could search or scroll through the alphabet...now, it's instant.
New signal icons, blah blah.
When running a software update from the in-built Apps Store, it goes 1) significantly faster and 2) the icon retains its position.