I already have Android 5.0.1 (LWX48P) on my Moto 360, but just got another System Update notification. Here is the OTA link that I pulled for the new build (LWX48T)
http://android.clients.google.com/packages/ota/motorola_minnow_metallica/c9f5570fc19b0bf4ebe1d4e0e551a8a8ad64a2a2.signed-metallica-LWX48T-from-LWX48P.c9f5570f.zip
http://android.clients.google.com/packages/ota/motorola_minnow_metallica/c9f5570fc19b0bf4ebe1d4e0e551a8a8ad64a2a2.signed-metallica-LWX48T-from-LWX48P.c9f5570f.zip