Once again, it is floating around that a 85mm f/1.4 Art is to be announced in 2015, and released in 2016. An ultra wide-angle zoom lens is also mentioned.
Since that 85mm f/1.4 Art is arguably the most requested Sigma lens, differentiating wishful thinking from real bits of info is the tough part — but we indeed expect another announcement this year.
Common sense would tend to something that doesn’t exist in the Sigma lineup, like a 135mm f/2. Sigma is quite proud of the recent 85mm f/1.4 EX and without a doubt updating it so quickly was not in the plans, but the demand has been too high to ignore it.