- Wikipedia:Accessibility
- Added to WP:ACCESS#Tables: "Some clients may not use CSS, so relying on CSS for table borders may render incorrectly."
- Wikipedia:Avoid peacock terms
- Added: "select(ed)"
- Added section, WP:PEACOCK#Exception for quotations: "Do not impose Wikipedia style guidelines on sources that we cite or quote. It is proper to say, "Music critic Ann Bond wrote that Mozart was a great composer," or "Smith said, 'Senator Jones's acceptance of this contribution is a major scandal.'" Such indirect or direct quotations may be useful in presenting important perspectives, especially on contentious subjects, or in summarizing a widely held view."
- Wikipedia:Avoid weasel words
- Removed many short examples
- Removed from See also: Plain English Campaign
- Wikipedia:Citing sources
- Removed several {{dubious}} tags
- Added See also link: Wikipedia:Bombardment
- Wikipedia:External links
- In WP:EL#Links normally to be avoided, changed [Any site that misleads the reader by use of factually inaccurate material or unverifiable research.] "See Reliable sources for explanations of the terms "factually inaccurate material" or "unverifiable research"." to "except to a limited extent in articles about the viewpoints which such sites are presenting."
- In a footnote in the same section: changed [a link to a social networking site may be included when it is] "the official website for a business, organization, or person." to "an official website for a business, organization, or person. However, Wikipedia does not provide a comprehensive web directory to every official website, and more than one official website should be listed only when the additional links provide unique content and are not prominently linked from other official websites."
- Added to same section: "Placing external links on Wikipedia navigation pages such as disambiguation, redirect and category."
- Added footnote to same section and also to WP:EL#Sites requiring registration: "This guideline does not restrict linking to websites that are being used as sources to provide content in articles."
- In WP:EL#Linking to user-submitted video sites, changed "Most YouTube videos containing copyrighted material (outside of the official YouTube channels of organizations and entertainment/news media companies) do not have permission of the copyright owners." to "Many YouTube videos of newscasts, shows or other content of interest to Wikipedia visitors are copyright violations."
- Wikipedia:Layout
- WP:Layout#Notes, Footnotes, or References changed to WP:Layout#Notes or References and expanded.
- Wikipedia:Lead section
- Added to WP:LEAD#First sentence: [When the page title is used as the subject of the first sentence, it may appear in a slightly different form, and it may include variations,] "including synonyms".
- Added to same section: [If the page is a list, do not introduce the list as "This is a list of X"] "or "This list of Xs..."."
- In WP:LEAD#Alternative names, changed "Inclusion of non-English names should be seen as a desirable part of maximizing information available to the reader." to "however, the editor needs to balance the desire to maximize making information available to the reader with the need to maintain readability of the lead."
- Expanded WP:LEAD#Citations
- Wikipedia:Linking
- Page protection was removed, and the page was substantially rewritten (last version in April, last version in May).
- Wikipedia:Manual of Style (capital letters)
- Added section, WP:MOSCAP#General principles, and added text: "Wikipedia does capitalize initial letters of proper nouns, and often proper adjectives. In doing this, we follow common usage, and when decapitalized forms are the normal English usage (abelian group, k. d. lang), we follow common usage."
- Added to WP:MOSCAP#Section headings: "Use sentence-style capitalization, not title-style capitalization:"
- Removed from WP:MOSCAP#Titles: "(Reference: Chicago Manual of Style 15th ed., 8.35; The Guardian Manual of Style, "Titles" keyword.)"
- Added to WP:MOSCAP#Directions and regions: "Proper names incorporated into Latin species names are not capitalised."
- Removed from WP:MOSCAP#Mixed or non-capitalization: [In such cases, Wikipedia articles may use lower case variants of personal names if they have regular and established use in reliable third-party sources.] "Editors disagree on how often this should be done; some editors would never do it; some would always follow the personal preference of the subject."
- Wikipedia:Manual of Style (dates and numbers)
- WP:MOSNUM#Year numbering systems was substantially changed.
- Added to WP:MOSNUM#Numbers as figures or words: "other quasi-continuous quantities" [are normally stated in figures]
- In WP:MOSNUM#Large numbers, changed [Scientific notation] "should use the {{val}} template, for example ''{{val|5.8|e=7}}''." to "editors can use the {{val}} template, which generates such expressions with the syntax:
{{val|5.8|e=7|u=kg}}." - New section created for existing text: WP:MOSNUM#High-precision numbers
- In WP:MOSNUM#Units of measurement, changed "apart from US and some UK specific topics, use metric units." to "apart from region-specific topics, use internationally accepted units for the topic at hand."
- Changed first paragraph of WP:MOSNUM#Which units to use slightly
- Removed section: WP:MOSNUM#Unnecessary vagueness
- Removed from See also: Wikipedia:Only make links that are relevant to the context#Dates
- Wikipedia:Manual of Style (titles)
- Added to WP:MOSTITLE#Italics: "Cantatas and motets" and "Operas, operettas, oratorios"
- Wikipedia:Manual of Style (trademarks)
- Added to WP:MOSTM#General rules: [avoid] "Se7en"
- Wikipedia:Manual of Style (writing about fiction)
- Removed from WP:WAF#The problem with in-universe perspective: [An in-universe perspective] "gives undue weight to unimportant information"
- Removed from WP:WAF#Accuracy and appropriate weight: [due weight] "in terms of WP:NPOV"
- Added examples and categories to WP:WAF#List of exemplary articles
- Wikipedia:Words to avoid
- Shortened WP:AVOID#Claim
- Removed from WP:AVOID#Fundamentally, essentially, basically, simply, at heart, inherently: "9/11 was fundamentally a battle between Christianity and Islam."