Here are pictures of the maps from Branch 1. Most of them are the 1v1 version, since the files then are smaller.
01. Atacama
02. Border Dispute
03. Death Valley [couldn't get a better image now]
04. Double Arabia (only desert)
05. Dry Arabia (only desert)
06. JD_Grossrox
07. Lombardia
08. Mirage
09. Plains
10. Slippery Springs
11. Team Acropolis [no image yet]
12. Xerotes
13. Cross
01. Atacama
02. Border Dispute
03. Death Valley [couldn't get a better image now]
04. Double Arabia (only desert)
05. Dry Arabia (only desert)
06. JD_Grossrox
07. Lombardia
08. Mirage
09. Plains
10. Slippery Springs
11. Team Acropolis [no image yet]
12. Xerotes
13. Cross