Indeed, Sigma released this morning the rumored 35mm and 65mm f/2 lenses, along with a 24mm f/3.5. Also included, as expected, was the magnetic lens cap and lens cap holder combo.
The 35mm goes for $639 in the US; the 24mm for $549; and the 65mm for $699. We suppose you could call those cheap lenses when referring to Sigma, although these are not Art lenses, and you can pick up some of the older Art primes for less than the price of the new 65mm option.