http://eekmit5jhwo6g57agr7cyq7f4ihi2pgrw2wsozrf7ycbkna2pe4vhaqd.onion
When a new official release is made available, you can easily restore your installation to vanilla I2P by installing the update. If you'd like to try out I2P + with the option to change back to your existing I2P installation, the easiest way is to make a copy of your I2P application folder, and then copy the update to the working I2P application folder and restart the router.