There is some amount of anticipation for a Sigma 85mm f/1.4 Art with Zeiss Otus-like quality. After all, one can’t help but eagerly wait for a 85mm lens now that top-notch 50, 35 and 24mm optics have been released.
The main difference with those focal lengths is the existence of a recent (2011) 85mm f/1.4 in the Sigma EX lineup. While optically it does deliver, the new line raises the bar in all aspects, and as a result, it is much more attention grabbing.
So a new lens appears to be the only way out for Sigma, but I’m not sure updating the 85mm EX so quickly was in the plans. With hindsight, perhaps it would have been better to release it as a Global Vision lens* together with the 35mm f/1.4 Art in late 2012.
Regarding a fast 135mm prime lens, the situation is quite different. Sigma has none, and the CEO stated a while ago that this void had to be addressed. One can assume that such a lens has been in development for some time.
The timing is ideal for Sigma to join the 135mm bandwagon: Canon’s and Nikon’s 135mm f/2 lenses are on the old side (even though the red-ringed one is still highly regarded) and the two recent releases from Zeiss and Samyang are manual focus only.
In the end, judging from what’s there and what’s not, a 135mm f/2 should come first, but it may not be what most users want. What do you think?
* Likewise for the Sigma 180mm f/2.8 EX Macro, which was released just a couple of months prior to the introduction of the revamped lineup. Moreover, the macro offering was already pretty solid, so there was no need to rush it to market.