We just started selling the tempered glass side panels along with the HDD and SSD trays for the Define R6 in North America at Newegg.

The TG side panels are also compatible with our newly launched Define S2, along with the SSD trays. However, the HDD trays are not compatible with the Define S2

Define R6/Define S2 TG Side Panels:

Black - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994066

Grey  - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994067

White - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994068

Define R6 HDD & SSD Brackets - 

White HDD Tray (2 pack) - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994069

Black HDD Tray (2 pack) - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994070

White SSD Tray (2 pack) - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994071

Black SDD Tray (2 pack) - https://www.newegg.com/Product/Product.aspx?Item=N82E16811994072