These findings were with Superior Potency VI, using Maximize and Empower, fully specced into the Smiting line including all critical enhancements, on a level 20 Favored Soul with AoV II.
Shield of Condemnation: Starts about a 15 second timer which can be viewed by examining the target and mousing over the debuff icon. While this did seem to function I was unable to get it to stack even while trash repeatedly attacked me. The duration just continued to decrease to 0:00 while being actively hit. Possible bug... More testing is certainly needed with this. It would be nice to have a visual indicator over a targets head when its affected by the shield, or perhaps a color modified HP bar on the target.
Archon: This felt very much like a small predator style shoulder cannon, It wont attack something unless you attack it first, guard effects and pets didn't seem to trigger it from what I could tell but it might warrant more testing. It began shooting once I started stabbing the frost giants with my eSoS. Archon dealt about 32 damage on average, and around 75 on a critical, little to no variance in damage but again this was limited testing. Unknown if enhancements, maximize, empower, or potency affects it at all as 32 damage is the average for the base effect of 1d3x20. Correctly fires every 2 seconds.
Aura of Menace: They take what looks like a dark fog type graphic effect for a second when entering your aura but no other visual indication after that point, Appears to be working as described but unable to test specific effects on it as I am a melee based Favored soul. Two icons were visible on examination window of enemies as debuffs, one mentioning -spell resist, and the other the mentioning -saves.
Divine Punishment: Expensive but powerful single target dot. About 65 sp per cast with Maximize and Empower on, Cant be extended but could be quickened, lasts 16 seconds or so, and you can refresh it after 10 seconds which starts the duration over again and adds 1 stack. Stacks work correctly and add 100% more spell damage each time with for maximum of 3 stacks. It felt like using a light-damage based Melfs Acid Arrow that could stack with itself if cast repeatedly and I believe I saw a special beam of light hit the target from the sky on the 3rd stack but I could be mistaken.
65 sp every 15 seconds is about 260 sp a minute to keep it running so seems to give favored souls the option of being dps instead of healing on raid bosses. Around 330 non-crit light damage at 3rd stack. No save for half damage as it hits for full damage every time like other dot spells. Cost a considerable amount of AP to spec for and ended up having to sacrifice AP elsewhere to max out the smiting line. I imagine that it becomes decent sp per damage efficient if the shield was debuffing light vulnerability to 100% and you mixed it with a searing light capstone. It would also be nice to have a visual indicator over a targets head when the spell is about to wear off as a reminder.
Blade Barrier: This is getting around 30% more damage then before with AoV II, Basically instant cast spell with Quicken on. Animation for it seems to be changed. 30 seconds duration as extend doesn't apply. Otherwise works as you would expect.
Leave any questions or specific tests you would like done below in the comments please.