The 10mm f/2.8 patent was filed back in March, while the 10-100mm f/4-5.6 VR lens patent was filed in late April. These are probably a couple of the more popular 1-Series lenses, so a replacement at some point makes sense.
As always, don’t take a patent filing as evidence of an impending announcement. It’s just something to keep on your radar.
You can check out the patents yourself by clicking links below.