You do need it because there is an update for the red card, put the launcher in and you will find out in the GW menu. What the update is for I don't know, we will probably find out in the general release. But v3.0 from GW apart from the design change on booting GW up and being able to boot up the exploit via the browser I'm not sure tbh what advantages being on 4.5.0 and below it really gives us?