Totally forgot to post about this one yesterday so here it is. What looks like a near final version of the official HTC 7 Mozart Windows Phone 7.5 Mango firmware has leaked and can painfully be flashed on the current handsets. I say painfully because some users seem to have encountered issues in the process while others are fine. Please keep in mind that this will void your device warranty and that nobody knows for sure if this firmware will be different from the official release coming out this fall.
RUU_Mozart_S_HTC_Europe_4.06.401.00_5.69.09_RELEAS E.exe
OS Version: 7.10.7720.68
Firmware: 2250.21.40600.401
Radio Software: 5.69.09.05a_22.50.50.21U
Bootloader Version: 4.6.2250.0(129193)
Continue reading: HTC 7 Mozart Windows Phone 7.5 Mango firmware