2021MY goes into production from the third week of July. Order books are currently closed until the start of July as 1st July will see price rises.
A5 Sportback is going up by around £20. The biggest changes will be on leasing, (PCP, PCH) via VW Financial Services. It's increasing its interest rate as its own cost of borrowing has risen. Of course, 1st July also starts Q3 offers but dealers have been told if they have potential customers to sign them up by 30th June to avoid any financial increases.
As for 2021MY; A5 has no changes. A4: if you spec beige seats (Sport) you will now get a beige dashboard. Likewise with rock grey interior, you will now get a rock grey dashboard.
Elsewhere in 2021MY A4, the 35 TFSI gets an improved mild hybrid system, pushing the 150PS to 165PS. Looking at the badging, I think that will make the 35 become a 40 TFSI. Headrests, these will be part leather part synthetic. Finally, flat bottom steering wheels will no longer be standard on Vorsprung models
Looking at the international market, the US gets heated rear seats and heated steering wheel as standard. If the UK market gets those remains to be seen.
Hope this helps.