It's "now" 3048, regular access to Clan tech is hopefully some time ago, with the two-three years after launch (next year, 3049 - hopefully) the contact with Clan equipment being usually rather brief and violent, if they get it right. (And in the first year, they'll reach the Periphery at best.) At best someone might offer some Lostech we could attempt to duct tape on the 'Mech.
Of course, it's a big open question how they do Clans for balance reasons and how/when players get access to Clan tech, but I would assume it happens little by little to keep up interest.
Edit: Oh. Warhammer WHM-7M is apprently two years old, so we'll have some IS advanced equipment around. (Of course, ZEU-9S is listed as 3050 at least in Megamek, but it's already mentioned in the
http://twitter.com/#!/innerspherenews - hopefully they do the propagation of tech right.)