Timeline of Discoveries
2007
April 1, 2007
Kejardon (under a pseudonym, see page 2 of the thread) posts an SMV showing completing the game with 13% by X-Ray Climbing in Golden Four, then X-Ray Climbing in Mother Brain's Room to bypass the Mother Brain fight.
This run also came with this comment about another discovery in the game:
Finally, the trigger that makes Zebes explode is simply entering the room behind Mother Brain - all Mother Brain does is set the timer that kills you. It's a random tidbit of trivia I've only now had the chance to put to use.
2008
May 9, 2008
Hotarubi posts this video showing the springball strat used in Lower Norfair Spring Ball Maze Room for 100%.
2010
November 4, 2010
JAM discovers the GT Code: http://forum.metroidconstruction.com/index.php/topic,562.msg14259.html#msg14259
JAM talks about the discovery of the GT Code here, in "Part 7": http://forum.metroidconstruction.com/index.php/topic,2319.msg28930.html?PHPSESSID=7692891baede64b1d76ead1656039c49#msg28930
The article that ensued: http://www.gamasutra.com/view/feature/196769/why_super_metroids_hacking_.php
2013
April 21, 2013
Cardweaver posts this video showing it's possible to do the Hi-Jumpless Lava Dive.
2014
March 5, 2014
Total posts on TASvideos about the investigations he's done into how Spacetime Beam works on a technical level, and posts that to the wiki.
March 7, 2014
Total and Lioran post this video showing a Spacetime Beam setup to trigger the escape sequence in the Pre-Moat Room (Crateria Kihunter Room). The next day they post this video, which is one of the most common setups used now for Any% GT Code.
March 10, 2014
amaurea posts a proof of concept TAS for Arbitrary Code Execution using Spacetime Beam.
2015
August 17, 2015
AxlSR discovers a variant of the shinespark strat that's currently used in Red Kihunter Shaft in modern runs of Any% PRKD.
September 11, 2015
Total and Taco discover that slopesparks are possible.
September 14, 2015
SUPERMETROIDFTP posts this video showing the application of a Superjump to get Plasma Beam before defeating Draygon.
2016
March 5, 2016
WildAnaconda debuts a TAS given to him by sniq which introduces the 14% Chargeless category, and the underflow glitch that makes it possible.
June 4, 2016
sniq discovers that firing a charged beam shot delays the shinespark timer by one frame each time.
2017
June 6, 2017
sniq revealed the Moonfall technique used to uncap falling speed.
2019
January 12, 2019
sniq releases this video, showing that Frog Speedway can be traversed right-to-left with Wave Beam and Spazer, without Speed Booster.
April 25, 2019
sniq describes on Discord the Zeb Skip Grapple Boost, discovered while he was making the 100% TAS.