WordPress 3.9 版本名稱為 “Smith”，以紀念爵士風琴手 Jimmy Smith，正體中文版現已開放下載，或是從你的控制台更新。這次更新包含許多細部修改，希望你會喜歡。
流暢的媒體編輯體驗
全新的可視化編輯器
新版視覺化編輯器在速度、可用性及行動裝置支援上都有了改進。 你現在可以從你的文字編輯器中直接貼上文字內容至視覺化編輯器，不用再為調整格式而浪費時間。（沒錯，我們就是在說你，Microsoft Word。）
編輯圖片更簡單
編輯文章時，使用裁切與旋轉工具來編輯圖片變得更輕鬆簡單。你也可以直接在編輯器裡縮放圖片。
拖曳你的圖片
上傳圖片變得更簡單。只要從你的桌面拖曳到編輯器即可。
相簿預覽
相簿在編輯器中以漂亮的網格方式呈現，如同已發佈文章裡的效果。
音訊和影片的新花樣
相片屬於相簿；現在我們也對音訊及影片加入簡單的播放清單功能，你可以更方便地展示你的音樂及影片片段。
小工具和首頁圖片即時預覽
在佈景主題自訂裡新增、編輯與重新排序你的網站小工具。不再有“意外發生“ 即時預覽你的修改，在準備就緒後才儲存變更。
改良後的首頁圖片工具讓你在自訂佈景主題時上傳、裁切和管理首頁圖片。
令人驚豔的佈景主題瀏覽器
尋找新的佈景主題應當是件簡單、有趣的事。透過全新佈景主題瀏覽器，盡情遨遊、享受 WordPress.org 無數的免費佈景主題。
工作人員
本次更新由 Andrew Nacin 和 Mike Schroder 領軍，並獲得以下這些優秀人員的協助。共有 267 位貢獻者參與這次的更新，創下新高：
Aaron D. Campbell, Aaron Jorbin, Adam Harley, Adam Silverstein, adelval, Ajay, Akeda Bagus, Alex Concha, Alison Barrett, Allan Collins, Amy Hendrix (sabreuse), Andrea Fercia, Andrew Nacin, Andrew Norcross, Andrew Ozz, Andrey “Rarst” Savchenko, Andy Keith, Andy Skelton, Anton Timmermans, Aubrey Portwood, Barry, Bartosz Romanowski, bassgang, bcworkz, Ben Dunkle, Bernhard Riedl, bigdawggi, Bob Gregor, bobbingwide, Brad Touesnard, bradparbs, bramd, Brandon Kraft, brasofilo, bravokeyl, Bryan Petty, cgaffga, Chirag Swadia, Chouby, Chris Blower, Chris Marslender, Chris Olbekson, Chris Scott, chriseverson, chrisguitarguy, Christopher Finke, ciantic, Comparativa de Bancos, Connor Jennings, Cor van Noorloos, Corphi, cramdesign, Daniel Bachhuber, Daniel Jalkut (Red Sweater), Danny de Haan, Daryl Koopersmith, Dave Kellam (eightface), DaveE, David A. Kennedy, David Anderson, David Marichal, Denis de Bernardy, Dion Hulse, Dominik Schilling, Doug Wollison, Drew Jaynes, DrProtocols, Dustin Filippini, eatingrules, edik, Elio Rivero, enej, Eric Andrew Lewis, Eric Mann, Erica Varlese, Erick Hitter, Evan Anderson, Fahmi Adib, fboender, Frank Klein, Gary Cao, Gary Jones, Gary Pendergast, genkisan, Gennady Kovshenin, George Stephanis, Graham Armfield, Grant Mangham, Gregory Cornelius, Gregory Karpinsky, hakre, hanni, Helen Hou-Sandí, ippetkov, Ipstenu (Mika Epstein), J.D. Grimes, Jack Reichert, jameslee, Janneke Van Dorpe, janrenn, JayCC, Jeff Sebring, Jen Mylo, Jeremy Felt, Jesin A, Jesper Johansen (jayjdk), jnielsendotnet, Joan Artes, Joe Dolson, Joe Hoyle, John Blackbourn, John James Jacoby, John P. Bloch, John Regan, Jon Cave, Jonas Bolinder (jond3r), Joost de Valk, Josh Pollock, Joshua Abenazer, jstraitiff, Julio Potier, Justin Kopepasah, Justin Sainton, K.Adam White, Kailey (trepmal), Kaspars, Kelly Dwan, kerikae, Kevin Worthington, Kim Parsell, Kirk Wight, kitchin, klihelp, Knut Sparhell, Konstantin Kovshenin, Konstantin Obenland, Krzysiek Drozdz, Lance Willett, Lee Willis, lkwdwrd, lpointet, Luc De Brouwer, Lucas Karpiuk, Mark Barnes, Mark Jaquith, Marko Heijnen, Marventus, Matt (Thomas) Miklic, Matt Banks, Matt Mullenweg, Matthew Boynes, Matthew Denton, Matthew Haines-Young, mattonomics, mattyrob, Matías Ventura, Max Cutler, mcadwell, Mel Choyce, meloniq, Michael Arestad, Michel – xiligroup dev, Miguel Fonseca, Mike Burns, Mike Hansen, Mike Manger, Mike Schinkel, Mike Schroder, mikecorkum, mitcho (Michael Yoshitaka Erlewine), Mohammad Jangda, Morgan Estes, Morten Rand-Hendriksen, Naoko Takano, Nashwan Doaqan, nendeb55, Nick Halsey, Nicole Arnold, Nikhil Vimal (NikV), nivijah, nofearinc, Nuno Morgadinho, olivM, Omer Korner, OriginalEXE, oso96_2000, patricknami, Paul Bearne, Paul Gibbs, Paul Wilde, pavelevap, Peter Westwood, Philip Arthur Moore, Pippin Williamson, Prasath Nadarajah, prettyboymp, Raam Dev, rachelbaker, Ram Ratan Maurya, ramonchiara, Rescuework Support, Rhys Wynne, Ricardo Correia, Richard Sweeney, Richard Tape, richard2222, Ricky Lee Whittemore, Robert Chapin, robmiller, Rodrigo Primo, romaimperator, roothorick, ruud@joyo, Ryan Boren, Ryan McCue, Sal Ferrarello, Samuel Wood (Otto), Sandeep, Scott Lee, Scott Reilly, Scott Taylor, ScreenfeedFr, scribu, sdasse, Sean Butze, Sean Hayes, Sean Nessworthy, Sergey Biryukov, shahpranaf, Shaun Andrews, ShinichiN, Simon Prosser, Simon Wheatley, Siobhan, Siobhan Bamber (siobhyb), sirzooro, solarissmoke, sonjanyc, Spencer Finnell, Spencer Piontkowski, stephcook22, Stephen Edgar, Stephen Harris, Steve Bruner, Steven Word, Takayuki Miyauchi, Tanner Moushey, Taylor Lovett, tbrams, tellyworth, TobiasBg, Tom Auger, Tom Willmot, Topher, topquarky, Torsten Landsiedel, Toru, Travis Smith, Umesh Kumar, undergroundnetwork, VarunAgw, wawco, Weston Ruter, wokamoto, xsonic, Yoav Farhi, Yuri Victor, Zach Tirrell, 和 Ze Fontainhas 。也感謝 Michael Pick 對於更新影片的協助。
如果你想幫忙，請查看 Make WordPress 和我們的核心開發部落格。感謝你選擇 WordPress。希望很快能與你在 4.0 版相見！