Was gonna post all of it here, but decided to take the easy way out and just link yal to the PDF that has most of the major changes. The site is wierd to navigate though so I'll copy paste what it says here shortly after this thread goes up. Anywho link to the big adjustments are below, and below that are my elaborations and/or thoughts on each of them.
http://splatoon.nintendo.com/assets/media/splatoon-patch-v2-2-0-notes.pdf
-=MAIN WEAPONS=-
Splattershot - Still a 3 hit kill, but now it only takes a single defense up main to make it a 4hko when it required two before. The Tentatek version is really gonna have to consider using damage ups now, but the regular is mostly unaffected since it should be using damage ups anyway. Combined with the Inkzooka nerf and Bomb Rush buff, the vanilla Splattershot looks really good now compared to the Tentatek, but of course it's still more strict with it's loadouts thus Tentatek will still be more popular.
N-ZAP - Didn't really need it, but it'll take the movement buff gladly.
Splash-O-Matic - Never understood why this weapon dealt less damage than the N-ZAP considering it also has less range, but they're fixing that now. Now it takes 3 defense up mains to make it a 5hko instead of just one. The vanilla version also gets it's special improved a bit while the Neo's is nerfed so there's that.
Splattershot Pro - A pure buff for the vanilla that it'll gladly take, but for the Forge it simply does not make up for the Point Sensor and Inkzooka nerfs.
Dual Squelcher - Gotta go fast!
Jet Squelcher - Thanks for that amazing 6% ink efficiency buff guys, totally makes up for the Splash Wall and Kraken nerfs, no lie no sarcasm.
L-3 Nozzlenose - Enhanced ink spread thus faster special building because the Nozzle D isn't the Kraken weapon we were trying to hit.
H-3 Nozzlenose - Well, atleast now it has one advantage over the L-3.
Luna Blaster/Blaster/Range Blaster - Only direct hits can kill now, so damage ups are pretty well useless since they'll always 2hko anyway if you can't get the direct. Frees up ability space atleast. Luna and Custom Range are especially hurting since their specials were also hit, but I fully expect there to still be plenty of Blasters around as their gameplan really hasn't changed, one shot kills aren't as easy anymore is all.
Rapid Blaster - Less squid form delay and less end lag are definitely good, but certainly not enough to really help these weapons unfortunately. Those same changes apply to Bomb Rush, and since they didn't specify which I'll just assume all for now.
Splat Roller/Carbon Roller - Bad enough that the Inkzooka n Kraken were hit, but in addition to that the edges of their hitboxes no longer one shot kills. Not really that big of a deal though, just gotta be a bit more accurate is all. Still being able to insta kill people despite having no ink never made sense so good that's gone. Not entirely sure what they mean by balancing the damage from repeated swings though.
Dynamo Roller - Same nerfs as the smaller Rollers, only in addition to that there's a slight delay before it's ink starts recharging after swinging, hindering it's already not so great ink efficiency. That's certainly not the end of the world though, so yeah Rollers will still be everywhere.
Ink Brush - There's really no help for this weapon huh.
E-Liter 3k - Damage is now the same as a Splat Charger, so it can no longer ohko without fully charging, unless you use damage ups of course. The long charge time which was supposed to be this weapon's downside is now actually it's downside. The Splat Charger certainly looks good compared to it now with it's significantly faster charge time and the vanilla's buffed Bomb Rush.
Bamboozler 14 MK II - You are not the Splash Wall abuser we are looking for.
Mini Splatling - Getting it closer to a regular Tentatek.
Heavy Splatling - Collateral damage victim.
Slosher/Tri-Slosher - Why not.
-=SUB WEAPONS=-
Point Sensor - Increase in it's AoE is nice I guess, but reducing how long the tag last is worse. Really unnecessary nerf there.
Splash Wall - To try and promote less cowardly play from Gal users. Faster to die and longer delay in ink refilling means it'll be harder to spam these one after another. Still very good, just easier to deal with.
-=SPECIAL WEAPONS=-
Inkzooka - Still too OP, gotta nerf it again. Almost a full second delay between shots is rough, but not too major.
Kraken - I'm surprised they didn't increase the points required the first time. You also better make sure you're in a safe spot when it ends since you'll be completely defenseless for almost a second, so not a completely "get out of jail free" card anymore. Also they made it easier to hit, but again, overall not too major of a nerf.
-=RANKED BATTLE=-
Erm wait, has special charge automatically filling up outside of Tenacity always been a thing? I find it hard to believe that I wouldn't have noticed, so I'm just gonna assume that's completely new lel. Very interesting addition here for sure, will certainly encourage teams to pursue the objective even if only for that faster special charge. This may lead to much special weapon spam though, but we'll see.
-=MISCELLANEOUS=-
Here's the other changes stated on their site: http://splatoon.nintendo.com/whats-new/
Stage Adjustments
Walleye Warehouse: Adjustments will be made to prevent users from taking certain shortcuts in Rainmaker Mode
Saltspray Rig: Adjustments will be made to prevent users from placing Splash Walls in certain places
Arowana Mall: Adjustments will be made to prevent users from taking certain shortcuts in all modes
Kelp Dome: Small adjustments will be made for Rainmaker mode
Flounder Heights: In addition to changing the stage layout in Rainmaker, other adjustments will be made to prevent users from taking certain shortcuts in all modes and to prevent the attachment of Suction Bombs in certain places
Hammerhead Bridge: Adjustments will be made to prevent users from taking certain shortcuts in all modes
Effects Adjustments
-The visual effects of position-tracking for teammates will be less visible.
-The launching sound effect of the Inkzooka will be more audible
Battle Adjustments
-Fixed the issue in which the ink refills slightly when beginning to charge an empty Splatling weapon
-Fixed the issue in which the Point Sensors and Disruptors do not function when there is significant lag in the connectivity
-Fixed the issue in which players are able to move the Tower even when they are not on the Tower by swimming in the area bordering the top and sides of the Tower
-Fixed the issue in which the Rainmaker shield does not take damage when the shield is extremely close to a wall
-Fixed the issue in which visual effects do not display when some of the ink hit the Rainmaker Barrier and Splash Walls
-Fixed the issue in which some ink splats occasionally go through thin walls
-Fixed the issue in which rollers occasionally inflict damage through thin walls
-Fixed the issue in which Kraken occasionally inflicts damage against opponents hiding on the other side of a thin wall
-Fixed the issue in which Shooter type main weapons shoot at a faster rate than usual when specific special weapons are activated
Bug Fixes in Battle Dojo
-Fixed the issue in which Splash Walls do not block opponents’ bombs and blasters
Bug Fixes
-Fixed the issue in which the damage stats for Splattershot Jr., Custom Splattershot Jr., N-ZAP 85, and N-ZAP89 are displayed as higher than they actually are. This only changes the information displayed in the stats. The actual stats will remain the same.
-Adjustments will also be made to make for a more pleasant gaming experience
