diff --git a/RELEASENOTES.md b/RELEASENOTES.md
index 26964b20..bfee9293 100644
--- a/RELEASENOTES.md
+++ b/RELEASENOTES.md
@@ -1,7 +1,9 @@
-### 4.8.0-beta01 - 2019-04-28
+### 4.8.0-beta02 - 2019-05-30
 * Optimization: Levenberg-Marquardt, Trust-Region Dogleg *~Jong Hyun Kim*
+* Optimization: Nelder-Mead-Simplex: Improve convergence for symmetrical functions *~Erik Ovegard*
 * BUG: Optimization: Nelder-Mead-Simplex did not return the best evaluated point in some cases *~Eric Scott Salem*
 * Factorial: first 170 values now constant (data segment) instead of precomputed on first use *~Portalez Regis*
+* Window Functions: Tukey window *~Marco Ross*
 
 ### 4.7.0 - 2018-11-11
 * Special Functions: Airy functions Ai, Bi *~Jong Hyun Kim*
diff --git a/src/FSharp.Tests/AssemblyInfo.fs b/src/FSharp.Tests/AssemblyInfo.fs
index af05b2c7..28664eb2 100644
--- a/src/FSharp.Tests/AssemblyInfo.fs
+++ b/src/FSharp.Tests/AssemblyInfo.fs
@@ -12,7 +12,7 @@ open System.Runtime.InteropServices
 
 [<assembly: AssemblyVersion("4.8.0.0")>]
 [<assembly: AssemblyFileVersion("4.8.0.0")>]
-[<assembly: AssemblyInformationalVersion("4.8.0-beta01")>]
+[<assembly: AssemblyInformationalVersion("4.8.0-beta02")>]
 
 [<assembly: ComVisible(false)>]
 [<assembly: Guid("C9AA6156-F799-42E4-B50D-2E88AD7D1750")>]
diff --git a/src/FSharp/AssemblyInfo.fs b/src/FSharp/AssemblyInfo.fs
index 08cf58d6..636c8a30 100644
--- a/src/FSharp/AssemblyInfo.fs
+++ b/src/FSharp/AssemblyInfo.fs
@@ -46,7 +46,7 @@ open System.Runtime.InteropServices
 
 [<assembly: AssemblyVersion("4.8.0.0")>]
 [<assembly: AssemblyFileVersion("4.8.0.0")>]
-[<assembly: AssemblyInformationalVersion("4.8.0-beta01")>]
+[<assembly: AssemblyInformationalVersion("4.8.0-beta02")>]
 
 [<assembly: ComVisible(false)>]
 [<assembly: Guid("048BC4EB-CE2B-4040-9967-4784F5405B0F")>]
diff --git a/src/FSharp/FSharp.fsproj b/src/FSharp/FSharp.fsproj
index 38fb2e54..63448505 100644
--- a/src/FSharp/FSharp.fsproj
+++ b/src/FSharp/FSharp.fsproj
@@ -8,12 +8,14 @@
     <IsPackable>true</IsPackable>
     <PackageId>MathNet.Numerics.FSharp$(PackageIdSuffix)</PackageId>
     <VersionPrefix>4.8.0</VersionPrefix>
-    <VersionSuffix>beta01</VersionSuffix>
+    <VersionSuffix>beta02</VersionSuffix>
     <Title>Math.NET Numerics for F#$(TitleSuffix)</Title>
     <Description>F# Modules for Math.NET Numerics, the numerical foundation of the Math.NET project, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. Supports .Net Framework 4.5 or higher and .Net Standard 1.6 or higher, on Windows, Linux and Mac.$(DescriptionSuffix)</Description>
     <PackageReleaseNotes>Optimization: Levenberg-Marquardt, Trust-Region Dogleg ~Jong Hyun Kim
+Optimization: Nelder-Mead-Simplex: Improve convergence for symmetrical functions ~Erik Ovegard
 BUG: Optimization: Nelder-Mead-Simplex did not return the best evaluated point in some cases ~Eric Scott Salem
-Factorial: first 170 values now constant (data segment) instead of precomputed on first use ~Portalez Regis</PackageReleaseNotes>
+Factorial: first 170 values now constant (data segment) instead of precomputed on first use ~Portalez Regis
+Window Functions: Tukey window ~Marco Ross</PackageReleaseNotes>
     <PackageTags>fsharp F# math numeric statistics probability integration interpolation regression solve fit linear algebra matrix fft</PackageTags>
     <IsTool>false</IsTool>
     <NeutralLanguage>en</NeutralLanguage>
diff --git a/src/Numerics.Tests/Properties/AssemblyInfo.cs b/src/Numerics.Tests/Properties/AssemblyInfo.cs
index 8f51968e..260853bf 100644
--- a/src/Numerics.Tests/Properties/AssemblyInfo.cs
+++ b/src/Numerics.Tests/Properties/AssemblyInfo.cs
@@ -11,6 +11,6 @@ using MathNet.Numerics.UnitTests;
 
 [assembly: AssemblyVersion("4.8.0.0")]
 [assembly: AssemblyFileVersion("4.8.0.0")]
-[assembly: AssemblyInformationalVersion("4.8.0-beta01")]
+[assembly: AssemblyInformationalVersion("4.8.0-beta02")]
 
 [assembly: UseLinearAlgebraProvider]
diff --git a/src/Numerics/Numerics.csproj b/src/Numerics/Numerics.csproj
index a0fe5f2f..d2abf56f 100644
--- a/src/Numerics/Numerics.csproj
+++ b/src/Numerics/Numerics.csproj
@@ -8,12 +8,14 @@
     <IsPackable>true</IsPackable>
     <PackageId>MathNet.Numerics$(PackageIdSuffix)</PackageId>
     <VersionPrefix>4.8.0</VersionPrefix>
-    <VersionSuffix>beta01</VersionSuffix>
+    <VersionSuffix>beta02</VersionSuffix>
     <Title>Math.NET Numerics$(TitleSuffix)</Title>
     <Description>Math.NET Numerics is the numerical foundation of the Math.NET project, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. Supports .Net Framework 4.0 or higher and .Net Standard 1.3 or higher, on Windows, Linux and Mac.$(DescriptionSuffix)</Description>
     <PackageReleaseNotes>Optimization: Levenberg-Marquardt, Trust-Region Dogleg ~Jong Hyun Kim
+Optimization: Nelder-Mead-Simplex: Improve convergence for symmetrical functions ~Erik Ovegard
 BUG: Optimization: Nelder-Mead-Simplex did not return the best evaluated point in some cases ~Eric Scott Salem
-Factorial: first 170 values now constant (data segment) instead of precomputed on first use ~Portalez Regis</PackageReleaseNotes>
+Factorial: first 170 values now constant (data segment) instead of precomputed on first use ~Portalez Regis
+Window Functions: Tukey window ~Marco Ross</PackageReleaseNotes>
     <PackageTags>math numeric statistics probability integration interpolation regression solve fit linear algebra matrix fft</PackageTags>
     <IsTool>false</IsTool>
     <NeutralLanguage>en</NeutralLanguage>