Finally! MUC has been a gap in LCY service for a while, especially as there is also no LH service at LCY and no BA or LH service at LGW either - only EasyJet from LGW or Heathrow.
I'm surprised it is BA and not LH starting this route - MUC is a neat connection hub for LH, so would think they had more interest in picking up the City traffic (though perhaps they wager the long-haul traffic from City is largely Westbound to the US and not connecting through MUC and/or they are happy to connect passengers through FRA instead...).
Anyway, good news and fills out what I have always seen as an obvious gap in the LCY destinations.