Odd, my node still sayin "5.0", git pulled today.
Anyway, complied last p2pool commit on win32 including LTC this time (finally get mingw working)
http://sdrv.ms/Swy8w9If anyone intrested

Will compile win64 version later today.
I pulled the latest via link and got forrestv-p2pool-4.0-0-g2adf77e.