At the USGS EarthExplorer you can now browse for latest Landsat 8 images. There are several download options, below is called "natural color". So far the collection includes high resolution shots from Greenland's west and east coast and of Canada's last ice shelfs. Both images are only a few hours old. Top one shows Lake Hazen frozen and the lower one Nares Strait preparing to open.
Click the images to enjoy an amazing resolution and rich details.