A thread has shown up on the EOS Numerique forum about what's coming shortly. I will talk about what's posted there.
Here's what I know so far
As I wrote yesterday, 2 of the big white lenses are going to be replaced. The above link says all 4, however I'm still told it'll just be 2 at a time.
300 f/2.8L IS II
400 f/2.8L IS II
[CR3] on at least 2 big white lenses getting replacements.
The above link points to a 100-300L. I've heard a bit about this over the last few weeks.
If I had to guess, it could be an EF 100-300 f/4L IS. It wouldn't be 2.8 and I highly doubt it would be variable aperture.
A wide angle zoom is also coming, I've heard 16-50 f/4L IS. It may be something different, but I do not see a 2.8 replacement of the 16-35 f/2.8 II.
The 8mm-12mm mentioned in the forum post I've heard nothing about.
Like we've said in the past, there are 3-4 lenses coming this fall.
I will [CR2] this.
The Bad News
I have heard NOTHING about the following desired lenses.
24-70 f/2.8L IS
If it's coming, it's been very well hidden. Not a single source has mentioned anything about it.
50 f/1.4 II
Nothing has come my way in a long time.
August 19 Announcements
The above thread also says there will be announcements tomorrow. To be honest, I've received an equal number of yays & nays for camera stuff being announced tomorrow.