I particularly like the 256 x 10GbE ports per rack feature (noted in Lightreading). Wow! Juniper even says this is wire-rate.
On a Internet design front. The focus of these boxes is intra-datacenter so it is no surprise that connectivity is Ethernet based and that there is some discussion of storage interfaces. But there is “zero” discussion of telecom connectivity. I take that to mean that they assume Ethernet connectivity to every kind of equipment in the datacenter. That includes the outside connections.
I also like how close the Cisco-stated $250M development cost is to my buddy Stacy’s estimates of such a beast a few years back. You were spot on dude!