According to WordPress.org this release has lot of new exciting features:

This release has exciting features:

  • A smoother media editing experience
  • Improved visual editing
  • Edit images easily
  • Drag and drop your images
  • Gallery previews
  • Do more with audio and video
  • Live widget and header previews
  • Stunning new theme browser

Full News :

WordPress 3.9 “Smith”

Posted April 16, 2014 by Matt Mullenweg. Filed under Releases.

Version 3.9 of WordPress, named “Smith” in honor of jazz organist Jimmy Smith, is available for download or update in your WordPress dashboard. This release features a number of refinements that we hope you’ll love.

A smoother media editing experience

 

editor

Improved visual editing

The updated visual editor has improved speed, accessibility, and mobile support. You can paste into the visual editor from your word processor without wasting time to clean up messy styling. (Yeah, we’re talking about you, Microsoft Word.)

image

Edit images easily

With quicker access to crop and rotation tools, it’s now much easier to edit your images while editing posts. You can also scale images directly in the editor to find just the right fit.

dragdrop

Drag and drop your images

Uploading your images is easier than ever. Just grab them from your desktop and drop them in the editor.


Gallery previews

gallery

Galleries display a beautiful grid of images right in the editor, just like they do in your published post.


Do more with audio and video

Images have galleries; now we’ve added simple audio and video playlists, so you can showcase your music and clips.


Live widget and header previews

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Add, edit, and rearrange your site’s widgets right in the theme customizer. No “save and surprise” — preview your changes live and only save them when you’re ready.

The improved header image tool also lets you upload, crop, and manage headers while customizing your theme.


Stunning new theme browser

theme
Looking for a new theme should be easy and fun. Lose yourself in the boundless supply of free WordPress.org themes with the beautiful new theme browser.


The Crew

This release was led by Andrew Nacin and Mike Schroder, with the help of these fine individuals. There are 267 contributors with props in this release, a new high:

Aaron D. CampbellAaron JorbinAdam HarleyAdam SilversteinadelvalAjay,Akeda BagusAlex ConchaAlison BarrettAllan CollinsAmy Hendrix (sabreuse),Andrea FerciaAndrew NacinAndrew NorcrossAndrew OzzAndrey “Rarst” SavchenkoAndy KeithAndy SkeltonAnton TimmermansAubrey PortwoodBarry,Bartosz RomanowskibassgangbcworkzBen DunkleBernhard Riedlbigdawggi,Bob GregorbobbingwideBrad TouesnardbradparbsbramdBrandon Kraft,brasofilobravokeylBryan PettycgaffgaChirag SwadiaChoubyChris Blower,Chris OlbeksonChris ScottchriseversonchrisguitarguyChristopher Finkeciantic,cmmarslenderComparativa de BancosConnor JenningsCor van Noorloos,CorphicramdesignDaniel BachhuberDaniel Jalkut (Red Sweater)Danny de Haan,Daryl KoopersmithDave Kellam (eightface)DaveEDavid A. KennedyDavid AndersonDavid MarichalDenis de BernardyDion HulseDominik SchillingDoug WollisonDrew JaynesDrProtocolsDustin FilippinieatingrulesedikElio Rivero,enejEric Andrew LewisEric MannErica VarleseErick HitterEvan Anderson,FahmifboenderFrank KleinGary CaoGary JonesGary Pendergastgenkisan,Gennady KovsheninGeorge StephanisGraham ArmfieldGrant Mangham,Gregory CorneliusGregory KarpinskyhakrehanniHelen Hou-Sandíippetkov,Ipstenu (Mika Epstein)J.D. GrimesJack ReichertjamesleeJanneke Van Dorpe,janrennJayCCJeff SebringJen MyloJeremy FeltJesin AJesper Johansen (jayjdk),jnielsendotnetJoan ArtesJoe DolsonJoe HoyleJohn BlackbournJohn James JacobyJohn P. BlochJohn ReganJon CaveJonas Bolinder (jond3r)Joost de Valk,Josh PollockJoshua AbenazerjstraitiffJulio PotierJustin KopepasahJustin SaintonK.Adam WhiteKailey (trepmal)KasparsKelly DwankerikaeKevin WorthingtonKim ParsellKirk WightkitchinklihelpKnut SparhellKonstantin KovsheninKonstantin ObenlandKrzysiek DrozdzLance WillettLee Willislkwdwrd,lpointetLuc De BrouwerLucas KarpiukMark BarnesMark JaquithMarko Heijnen,MarventusMatt (Thomas) MiklicMatt BanksMatt MullenwegMatthew Boynes,Matthew DentonMatthew Haines-YoungmattonomicsmattyrobMatías Ventura,Max CutlermcadwellMel ChoycemeloniqMichael ArestadMichel – xiligroup dev,Miguel FonsecaMike BurnsMike HansenMike MangerMike SchinkelMike Schrodermikecorkummitcho (Michael Yoshitaka Erlewine)Mohammad Jangda,Morgan EstesMorten Rand-HendriksenNaoko TakanoNashwan Doaqan,nendeb55Nick HalseyNicole ArnoldNikhil Vimal (NikV)nivijahnofearincNuno MorgadinhoolivMOmer KornerOriginalEXEoso96_2000patricknamiPaul Gibbs,Paul WildepavelevapPbearnePeter WestwoodPhilip Arthur MoorePippin WilliamsonPrasath NadarajahprettyboympRaam DevrachelbakerRam Ratan MauryaramonchiaraRescuework SupportRhys WynneRicardo CorreiaRichard SweeneyRichard Taperichard2222Ricky Lee WhittemoreRobert Chapin,robmillerRodrigo Primoromaimperatorroothorickruud@joyoRyan Boren,Ryan McCuesalcodeSamuel Wood (Otto)SandeepScott LeeScott ReillyScott TaylorScreenfeedFrscribusdasseSean ButzeSean HayesSean Nessworthy,Sergey BiryukovshahpranafShaun AndrewsShinichiNSimon ProsserSimon WheatleySiobhanSiobhan Bamber (siobhyb)sirzoorosolarissmokesonjanyc,Spencer FinnellSpencer Piontkowskistephcook22Stephen EdgarStephen Harris,Steve BrunerSteven WordTakayuki MiyauchiTanner MousheyTaylor Lovett,tbramstellyworthTobiasBgTom AugerTom WillmotTophertopquarkyTorsten LandsiedelToruTravis SmithUmesh KumarundergroundnetworkVarunAgw,wawcoWeston RuterwokamotoxsonicYoav FarhiYuri VictorZach Tirrell, and Ze Fontainhas. Also thanks to Michael Pick for producing the release video.

If you want to follow along or help out, check out Make WordPress and our core development blog. Thanks for choosing WordPress. See you soon for version 4.0!

Source : http://wordpress.org/news/2014/04/smith/

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