I like next spaceflight.com for this kind of thing. It doesn't have any early speculation as to dates, but it does publish them quickly after they are confirmed

I like next spaceflight.com for this kind of thing. It doesn't have any early speculation as to dates, but it does publish them quickly after they are confirmed. It also has general information on the launch vehicle as well as a link to a live stream - but hopefully you will not have to use the latter :)