No it's not just you, it's gone for me too, you should report this in the bugs forum. There is other stuff missing too, I'm not being told what bay to dock at, neither do I hear anything when docking is refused.
I've also noticed some audio anomalies in the FSD count down, i.e. 4 3 2 1 Engage, between 4 and 3 I hear a sound not heard before, it sounds like a bum note on an out of tune piano, it does it again between 1 and Engage. It goes like 4 tink 3 2 1 tink engage. If you turn the sound effects slider down by 30% you will hear it much clearer.
I've tried the other sound issues fix mentioned in a sticky in the bugs forum i.e. changing to 24bit 48,000 hz etc and changing to another audio source. I normally use Logitech Artemis 933 7.1 surround headphones and I also tested it with speakers, the missing audio and anomaly in still present on both audio output methods. Cant say I noticed it in beta to be honest, but I didn't test that much.