diff --git a/.github/workflows/alpha.yml b/.github/workflows/alpha.yml
index 4544bdd1d..037ecc3b9 100644
--- a/.github/workflows/alpha.yml
+++ b/.github/workflows/alpha.yml
@@ -226,7 +226,9 @@ jobs:
           cd ..
 
       - name: Build
-        run: pnpm build
+        run: |
+          export ZEN_RELEASE=1
+          pnpm build
 
       - name: Package
         run: pnpm package
@@ -349,6 +351,7 @@ jobs:
       - name: Build
         run: |
           unset SURFER_PLATFORM
+          export ZEN_RELEASE=1
           pnpm build
 
       - name: Package
diff --git a/.github/workflows/src/windows_mozconfig b/.github/workflows/src/windows_mozconfig
index a7fe61c23..d51edbaad 100644
--- a/.github/workflows/src/windows_mozconfig
+++ b/.github/workflows/src/windows_mozconfig
@@ -7,7 +7,7 @@ export WINEDEBUG=-all
 
 #? https://bugzilla.mozilla.org/show_bug.cgi?id=1617793
 #? https://phabricator.services.mozilla.com/D170170
-ac_add_options --target=x86_64-pc-windows-msvc
+ac_add_options --target=x86_64-pc-mingw32
 
 export MOZ_STUB_INSTALLER=1
 export MOZ_MAINTENANCE_SERVICE=
@@ -15,5 +15,30 @@ export MOZ_MAINTENANCE_SERVICE=
 export MOZ_PKG_FORMAT=TAR
 export MOZ_LTO=cross
 
+export CROSS_BUILD=1
+POLLY="-mllvm -polly -mllvm -polly-2nd-level-tiling -mllvm -polly-loopfusion-greedy -mllvm -polly-pattern-matching-based-opts -mllvm -polly-position=before-vectorizer -mllvm -polly-vectorizer=stripmine"
+TOOLS=$(echo ~)/win-cross
+WINSYSROOT="$(echo ~)/win-root"
+
+export MIDL="$TOOLS/wine/bin/widl"
+export MOZ_INCLUDE_SOURCE_INFO=1
+export MOZ_STUB_INSTALLER=1
+export WIN32_REDIST_DIR="$(echo ~)/win-cross/vs2022"/VC/Redist/MSVC/14.34.31931/x64/Microsoft.VC143.CRT
+export WIN_UCRT_REDIST_DIR="$(echo ~)/win-cross/vs2022/Windows Kits/10/Redist/10.0.22621.0/ucrt/DLLs/x64"
+export WINEDEBUG=-all
+
+ac_add_options --enable-lto=cross,full
+ac_add_options --enable-optimize="-clang:-march=x86-64 -clang:-msse3 -clang:-mtune=haswell -clang:-O3 -w"
+ac_add_options --enable-release
+ac_add_options --enable-rust-simd
+ac_add_options RUSTC_OPT_LEVEL=3
+export MOZILLA_OFFICIAL=1
+export RUSTFLAGS="$RUSTFLAGS -Ctarget-cpu=x86-64"
+
+ac_add_options --enable-default-browser-agent
+ac_add_options --enable-install-strip
+ac_add_options --enable-jxl
+ac_add_options --enable-linker=lld
+
 # ALWAYS MANTAIN ONE LINE BREAK AT THE END OF THIS FILE
 
diff --git a/configs/common/mozconfig b/configs/common/mozconfig
index b4af2e587..4e1426653 100644
--- a/configs/common/mozconfig
+++ b/configs/common/mozconfig
@@ -1,3 +1,11 @@
+if test -d "$HOME/.mozbuild/clang/bin"; then
+    export CC="$HOME"/.mozbuild/clang/bin/clang
+    export CXX="$HOME"/.mozbuild/clang/bin/clang++
+else
+    export CC=clang
+    export CXX=clang++
+fi
+
 # Browser branding
 ac_add_options --enable-update-channel=release
 ac_add_options --without-wasm-sandboxed-libraries
@@ -34,9 +42,25 @@ ac_add_options --enable-release
 ac_add_options --enable-optimize
 ac_add_options --with-ccache=sccache
 ac_add_options --disable-debug
+
+ac_add_options --disable-bits-download
+ac_add_options --disable-crashreporter
+ac_add_options --disable-dmd
+ac_add_options --disable-geckodriver
+ac_add_options --disable-maintenance-service
+ac_add_options --disable-parental-controls
+ac_add_options --disable-profiling
+ac_add_options --disable-tests
+
+ac_add_options --enable-unverified-updates
 ac_add_options --enable-updater
 
 ac_add_options --without-wasm-sandboxed-libraries
 
+export MOZ_REQUIRE_SIGNING=
+export MOZ_TELEMETRY_REPORTING=
+
+ac_add_options --target=x86_64-pc-linux-gnu
+
 # ALWAYS MANTAIN ONE LINE BREAK AT THE END OF THIS FILE
 
diff --git a/configs/linux/mozconfig b/configs/linux/mozconfig
index 4105cacc6..b57aaeac8 100644
--- a/configs/linux/mozconfig
+++ b/configs/linux/mozconfig
@@ -1,12 +1,18 @@
-# Optimise builds
-# ac_add_options --enable-application=browser
-# ac_add_options --enable-hardening
-# ac_add_options --enable-rust-simd
-# ac_add_options --enable-release
-# ac_add_options --enable-optimize
-# ac_add_options --with-ccache=sccache
-# ac_add_options --disable-debug
-# ac_add_options --enable-updater
+
+if test "$ZEN_RELEASE"; then
+    ac_add_options --enable-lto=full
+    ac_add_options --enable-optimize="-march=x86-64 -msse3 -mtune=haswell -O3 -w"
+    ac_add_options --enable-release
+    ac_add_options --enable-rust-simd
+    ac_add_options RUSTC_OPT_LEVEL=3
+    export MOZILLA_OFFICIAL=1
+    export RUSTFLAGS="$RUSTFLAGS -Ctarget-cpu=x86-64"
+fi
+
+ac_add_options --enable-linker=lld
+ac_add_options --enable-pulseaudio
+ac_add_options --enable-strip
+ac_add_options --enable-alsa
 
 # Disable telemetry and tracking
 mk_add_options MOZ_TELEMETRY_REPORTING=
diff --git a/surfer.json b/surfer.json
index fee2a7c49..9e7c02b5d 100644
--- a/surfer.json
+++ b/surfer.json
@@ -27,7 +27,7 @@
       "brandShortName": "Zen Browser",
       "brandFullName": "Zen Browser",
       "release": {
-        "displayVersion": "1.0.0-a.1",
+        "displayVersion": "1.0.0-a.0",
         "github": {
           "repo": "zen-browser/desktop"
         },