On Samsung´s own UAPROF RBMEN has found website information about an upcoming high-end tablet probably the Galaxy Tab 3 Plus. Model number SM-P900 showed up and confirmed the screen resolution of 2560 x 1600 pixels which is the same as the Nexus 10. The UAPROF file also confirmed the CPU type which is an ARM 11 processor. The tablet will come in 3 versions SM-P900 3G / Wi-Fi, SM-P901 WiFi and SM-P905 3G / Wi-Fi / LTE. We expect this to be a high-range tablet without SPEN functions cause of the model letter P. Samsung is expected to announce this tablet at IFA 2013 in Berlin and SamMobile will be there!
Update: SamMobile source confirmed new high-range tablet
Firmeware information P905XXEAMF6A/P905OXAUAMF6/P905XXAMF6