Within the files found in 3.80 firmware, a new file called pspbtcnf_03g.bin has been found.
"Since 2.71 and especially in 2.80, we could see a string refering to pspbtcnf_02g.bin which suggested the support of a new hardware or at least of a new operative mode. Later with the slim release we found out that the slim's codename was this infamous 02g (proably standing for second generation) and that it used the _02g modules as well as pspbtcnf_02g.bin. It means that they worked on slim firmware/kernel for months before the actual hardware was announced/released.
We believe it is the same with the 3rd generation hardware which they are now preparing for sure. Will it be yet another lighter (and pandora proof) psp or will it be the new psp phone ? Time will tell"