A new HTC 7 Mozart ROM containing the non final build of NoDo (7355) has just leaked a couple of minutes ago. It’s up to you to decide if it’s worth to flash you Mozart with this one though given that the official update should start to roll out pretty soon. A similar 7355 build rom for the Samsung Omnia 7 is also scheduled to be leaked soon (Firmware: KA1) but once again it may be better to wait a bit for the official release.
UPDATE: The OS version is actually 7389 (which should be the final NoDo build) and not 7355 as stated by the original poster. So you can feel free to flash your Mozart with it .
The 7355 build seems to be pre-loaded on many handsets lately but the final NoDo build isn’t expected to be under 7389.
The ROM name is: RUU_Mozart_HTC_Europe_1.30.401.01_5.54.09.21_22.33 b.50_RELEASE
You can grab the file directly from here.
Thanks for the heads up Mary Jo !