. It’s currently in the testing phase and will feature the following additions:* Built-in ISO/CSO support (DAX to be added in 2.71 SE-C (or later)). The ISO/CSO in the “ms0:/ISO/” folder will display in the game menu. At this time an UMD has to be in the drive (that won’t be needed in the future releases);
* Ability to set the “ms0:/PSP/GAME/” folder for 1.50 kernel homebrews and “ms0:/PSP/GAME271/” for 2.71 homebrew (this is optional);
* Ability to run an EBOOT at startup;
* Some game compatibility issues were fixed;
* Ability to force the use of boot.bin in UMDs;
* Ability to enable/disable the noplainmodulecheck patch in UMDs/ISOs (for advanced users);
* All previous features from SE-A.
2.71 SE-B is currently being tested by Dark_AleX, Mathieulh, and harleyg; expect to see it in the near future!
source: Mathieulh