There is! ILFC is rumoured to place an order for up to 30 A330-100, maybe already this week in Farnborough. In addition Airbus plans two versions of this aircraft, one for long-haul flights and one with an increased capacity.
Given that there are a LOT of A300B's and A310's that are in need of replacement soon, it's small wonder why Airbus has gotten a lot of interest in this new plane.
Like I said originally, SQ is looking for a replacement for their A310-300 fleet, LH is also looking at an A300/A310 replacement, and ILFC is looking for a plane it can lease to airlines that need long-range service but don't want to pay for owning the plane. Don't be surprised if there are up to 70 outstanding orders for the A330-100 by the end of the Farnborough Air Show.
When we take potential orders from charter carriers like Hapag-Lloyd into consideration your guess of up to 70 orders for the A330-100 might become reality. And having ILFC, LH and SIA as launch customers is the best thing a manufactur can have...
But will A330-100 be too small to be efficient enough? (Efficiency decreases with decreasing load, my physics' still here). Or are they taking advantage of the similarity between all A330/A340 variants, so that the need for crew training is not as "desperate" (as in the case of A318).