No need to worry about a sour aftertaste here, we're of course talking about the wonderful software and not the tasty liquid.
As usual, they're in bug-fix mode while they attempt to make the best version of Wine they can and so no super huge features made it in.
They noted 13 bug fixes this time:
20728 Multiple video players crash when opening audio or video file (MPC-HC v1.6.5, PotPlayer 1.5.x)(FilterGraph_create releases/destroys controlling IUnknown) 26369 A.R.E.S. Extinction Agenda 1.x (.NET 2.0, XNA 3.1 game) crashes during intro ('quartz' FilterGraph2_Connect must translate HRESULT of failures more correctly) 29461 BurnPlot (VB6 app) fails to start, complaining with "Run-time error '438'" (WshShell3 'SpecialFolders' collection 'item' method invocation fails) 34884 Touhou Danmakufu 0.12m's font becomes distorted 35573 gdi32:fonts test_stock_fonts() fails on Windows 7 in the Japanese and Hebrew locales 36082 Cannot Read Text In "Question" Boxes On Microsoft Money 2005 Installation 36084 Microsoft Money 2005 Window Going "Black" After Certain Menu Operations 43211 NVIDIA GeForce Experience 3.x installer fails due to 'setupapi.SetupDiDeleteDeviceInfo' stub 44796 Age of Empires II: The Conquerors is broken when CSMT is enabled 45874 Secret Files 1-2: hardware mouse cursor corrupted 46212 Multiple games have performance issues (Project CARS, NFS: Hot Pursuit (2010), Gas Guzzlers: Combat Carnage) 46459 Secret Files 1-2, Ufo: Extraterrestrials: mouse cursor invisible when anti-aliasing and hardware mouse enabled 46480 Invalid write of size 2 in ntoskrnl.exe/tests/ntoskrnl.c
I imagine when 4.0 is out and final, Steam Play will see an update to it. We haven't seen a Steam Play update since 3.16-6 in December about a month ago now. It might be a good idea to wait, to get all the fixes they can and then rebase onto a stable and modern version of Wine.
What? Were you expecting a pun? Wine not! I'm corked after a long day.