Since I have just been accepted into the program, I can tell you which information are they giving me as a new affiliate.
In the welcome email there is a link "Take a look at our commissions", and when you click, a page with commissions opens up. The main part of it looks like this:
So, no obvious sign of the 5% commission plan. Then I clicked the Terms & Conditions and unlike the Dropbox document crowngate linked to, which says "effective 1 November 2015", my version says "effective 1 November 2014" and there is no mention of the 5% commission plan but there's an asterisk saying the commissions are subject to change:
If I didn't visit this thread on GPWA I'd be perfectly convinced this is a reliable program and that my commission plan is 25%, and that it will be like that for good.
Do they send the notice of a commission change for accounts older than 6 months only when the account gets older than 6 months? Or will they email me on 1 November? Let's wait and see when will I get that email notice.