Delivery to the CPS merchants in Germany starts definetely next week. This is CR3 and reported a few times in the last two days by Canon Germany (CPS) and Canon Europe (CPS).
But I don´t think that Canon is able to fulfill all preorders. CPS members (platinum) are the first who get the lens.
I read a lot of IS. => You don´t need an IS. I am happy with my prototype of the lens without IS. If you want the best image quality and you shoot architecture, landscapes or available light use a good tripod with a gearhead like the Manfrotto 405. If you want to make videos get a tripod with a good video head. For sports, weddings and travelling you don´t need an IS.
-1........Without tripod, "IS" can be usefull for low light shot - shutter speed 1/40 or slower.
Yup ... mere mortals like me need IS, coz I hate climbing sand dunes in the desert with a tripod in my hand ... the same applies during my family vacations ... most of my vacations are in a tour bus, sightseeing new places and it is convenient to have IS ... that is the reason why I like 24-105 L IS ... but if 24-70 f/2.8 had IS I can do so much more with the DOF.
I know it is wishful thinking but it would be AWESOME if Canon made 24-105 f/2.8 L IS.
5D MK III, 16-35/2.8 L II, 24-70/2.8 VC, 24-105/4 L IS, 70-200/2.8 L IS II, 100/2.8 L IS, 40/2.8, 50/1.4, 85/1.8, 150-500 OS, 600EX-RTx2, ST-E3-RT, Rokinon 24/3.5 T-S, D7100+18-300 VR, YN568EX, 055CXPRO4+468MGRC2, 190CXPRO4+322RC2, Gorillapod Focus+496RC2, CamRanger, B+W filters, Konova K3/31.5 etc