There's a metric fuckton of differences. I"ve been trying to keep track of them all.
There are actaully -three- versions of 4th edition.
Shadowrun 4th
4th Anniversary PDF
4th anniversary printing.
All 3 have minor differences. I was pretty fucking pissed to see that two different versions of Anniversary had different Bow rules - despite the changelog.
Other ninja edits, which may or may not be in the changelog:
Going from my list...
Crash Node and Program changed from Attack to Exploit, which breaks the 3 musketeer's suite and the Ticker virus in Unwired.
Mystic Adept's Magic/adept power split clarified and improved, and now get Full magic to most things that reference it(such as overcasting)
Skillsofts were made more expensive. This was changelogged
Autosofts, however, were made more expensive too - in 4th its Rx200/Rx500 depending on rating, and in 4A its rx500/rx1000.
Spirits of Man made unable to overcast.
Scatter had the fuck nerfed out of it, to the point where grenades teleport through walls. ( and they forgot to carry some changes over from the airburst link, i think).
Concealment, the spirit power, may have had some rules added:
http://forums.dumpshock.com/index.php?showtopic=28994Weapon Range penalties for shooting at long ranges were increased across the board.
Sniper Calibration rules added
Bows were changed. Twice. The current version has bows with a strength max of 8, and arrows have a rating. Stupidly INJECTION arrows dont.
Aid Sorcery was nerfed: the spirit's force must be equal to or greater than the Force of the spell to be affectd.
Gel rounds nerfed. Formerly +2dv, now -1.
Ultrasound, the vision enhancement was changed: Note, this is not present in the PDF release of 4a. It takes 2 capacity in a visual sensor
Visual sensors were changed - they now have a capacity. Formerly it was something like ' the rating of a sensor determines how many ratings worth of stuff it can take in accessories.' Thats been fixed. Unfortuantely, they forgot to copy the new, more clarified rules over to Microphones.
Technomancer rebooting was apparently removed.
And yeah. A lot of random stuff wasn't changelogged. I've been writing down a file every time I find something - but i'm sure others have found stuff to.
So! lets have it, dumpshock. See if we can't find all the stuff catalyst is too goddamn lazy to tell us about.