Still no info on amount for "reduced seller fee's"
I do see some positive with free gallery and repeat feedback credit.

From ebay website

Let's take a quick look at all the things we're doing to strengthen our partnership with our sellers:

Reducing insertion fees
Free Gallery … on all listings!
Reduced Feature Plus and Pro Pack fees
Increased listing exposure for sellers with great DSRs
Pricing discounts for PowerSellers with great DSRs
Protection from chargebacks for PowerSellers
All addresses are confirmed addresses for PowerSellers on their eBay listings that are paid with PayPal
Unlimited PayPal protection for PowerSellers
Repeat Feedback credit
Rolling 12-month Feedback Percentage
Personalized Seller Dashboard