Rumor: Four New Sigma Lenses To Be Announced In 2013?

Sigma appears to be very actively working on new lenses. We just had the announcement of very innovative lens, the Sigma 18-35mm f/1.8 DC (sample pics here) with a constant f/1.8.  New Sigma rumors surfaced on the web. It looks as if there will be four new Sigma lenses in 2013:

• a 135mm f/1.8 DG OS lens (“ART” line-up)
• a 24mm f/1.4 DG lens (“ART” line-up)
• an updated 50mm f/1.4
• one more lens (but no hints here)

[via CR]