Sites
This is a collection of various pikmin related sites (such as but not limited to the official sites and records of important interviews), inlcuding screenshots, current links (when avaliable), and archive links. These are organized by topic and then publication date, chronologicaly. In cases where dates are unknown I try to put them where they make sense to me based on what game is being talked about, if the site mentions "upcoming" or "recently released" games, and how old the website appears to be.
News and Interviews
Various news articles and interviews done about Pikmin
Pikmin 2 Development Staff Interview

Language: Japanese
Date: Unknown
Site Link
Wayback Machine Archive Link
Archive.is Link
An interview with a few developers of Pikmin 2, hosted on Nintedo's website. They ask questions about game design and audio design. It is ended with the developers talking about how pleased they are with the final product.
Hobonichi Miyamoto/Pikmin 2 Interview
Language: Japanese
Date: July 15th, 2004
Site Link
Wayback Machine Archive Link
Archive.is Link
An interview with Miyamoto about both Zelda and Pikmin, the Pikmin 2 section is near the bottom. They talk about his role in creating it and his general thoughts.
Pikmin 2 IGN Interview

Language: English
Date: August 24, 2004 - Updated on May 20, 2012
Site Link
Wayback Machine Archive Link
Archive.is Link
Note: I am unaware of what the 2012 update changed, as the earliest snapshot saved to the Wayback Machine is dated 2015. The article is a transcript for a private press-confrance held for the media. Once again, most questions are about design choices made for the game, spesifically ones made in response to critisisms of the first game. Intrestingly, someone asked about the potential for a Pikmin 3 on Gamecube or DS, though the only answer was that further development couldn't be talked about. They do discuss desires to find more ways to work with the pikmin, though.
Gamespot New Play Control Pikmin Q&A

Language: English
Date: February 27, 2009
Site Link
Wayback Machine Archive Link
Archive.is Link
Gamespot interview with Shigefumi Hino (the project leader of the original Pikmin for gamecube), asking mostly about how motion controls have changed the game but also about how a Pikmin game for the DS would work and how the game may have been received compared to how it did on the Gamecube. Quick warning, the article's introduction does describe the pikmin as "enslaved" which is both inaccurate and insensitive.
4Gamer Miyamoto/Pikmin 3 Interview

Language: Japanese
Date: July 13, 2013
Site Link
Wayback Machine Archive Link
Archive.is Link
For this site, you have to click on the 1-3 buttons near the top to switch between the pages of the interview. This works on both archive sites, but note that Archive.is will open these pages in new tabs. An interview with Miyamoto about Pikmin 3, its game design choices, and mistakes learned from past instalments. This one comes off as a much more casual conversation than a formal interview, resulting in a more natural flow and many points being discussed.
Here's links to three tumblr posts that translate the pages to english: part one, part two, and part three. Archives of these links will be added at another time.
Gamewatch Miyamoto/Pikmin 3 Interview

Language: Japanese
Date: July 13, 2013
Site Link
Wayback Machine Archive Link
Archive.is Link
Another interview with Miyamoto about Pikmin 3, its delays, how the hardwear of the WiiU has changed the game, and some more game design questions. They also talk about the then upcoming short films.
Famitsu Miyamoto/Pikmin 3 Interview
Language: Japanese
Date: July 21, 2013
Site Link
Wayback Machine Archive Link
Archive.is Link
Another interview with Miyamoto about Pikmin 3, this time focusing on the hardwear of the game and a few behind-the-scenes facts (such as the confirmation of a failed attempt to make a pikmin DS game).
Gamespot "Pikmin 4 Still Happening" Article

Language: English
Date: July 7, 2016
Site Link
Wayback Machine Archive Link
Archive.is Link
The infamous article promising us Pikmin 4 will really happen, we swear guys it'll be here. Pikmin 4 was announced on September 13 2022, a little over 6 years after this article was posted.
Eurogamer "Pikmin 4 is Progressing" Article

Language: English
Date: June 19, 2017
Site Link
Wayback Machine Archive Link
Archive.is Link
The article mentions being updated on the 19th of June, but I was unable to find an original upload date. This is yet another article mentioning the promise for a pikmin 4, though it is incredibly short.