What is this?

Xposed Installer for non-rooted devices containing MTK SoC

If my device is already rooted, do I need this?

Nope, download Xposed Installer apk and install from there

* Any MTK device (may need to contain user2root hidden app, not tested on others without it)

Name		Name	Last commit message	Last commit date
.gitattributes		.gitattributes
.gitignore		.gitignore
AdbWinApi.dll		AdbWinApi.dll
AdbWinUsbApi.dll		AdbWinUsbApi.dll
NOTICE.txt		NOTICE.txt
README.md		README.md
XposedBridge.jar		XposedBridge.jar
adb.exe		adb.exe
app_process		app_process
com.ceco.kitkat.gravitybox_v129_565389.apk		com.ceco.kitkat.gravitybox_v129_565389.apk
de.robv.android.xposed.installer_v32_de4f0d.apk		de.robv.android.xposed.installer_v32_de4f0d.apk
enabled_modules.xml		enabled_modules.xml
modules.list		modules.list
source.properties		source.properties
xposed.bat		xposed.bat